WO2010047157A1 - スピーカ装置 - Google Patents
スピーカ装置 Download PDFInfo
- Publication number
- WO2010047157A1 WO2010047157A1 PCT/JP2009/062480 JP2009062480W WO2010047157A1 WO 2010047157 A1 WO2010047157 A1 WO 2010047157A1 JP 2009062480 W JP2009062480 W JP 2009062480W WO 2010047157 A1 WO2010047157 A1 WO 2010047157A1
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- WIPO (PCT)
- Prior art keywords
- voice coil
- speaker device
- diaphragm
- holding
- vibration direction
- Prior art date
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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
- H04R9/025—Magnetic circuit
Definitions
- the present invention relates to a speaker device.
- a dynamic speaker device As a general speaker device, a dynamic speaker device is known (see, for example, Patent Document 1). As shown in FIG. 1, for example, 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. And a magnetic circuit in which a magnetic gap is formed.
- the voice coil bobbin 610J vibrates due to the Lorentz force generated in the voice coil 611J in the magnetic gap, and the diaphragm 21J is driven by the vibration.
- the general dynamic speaker device described above has a voice coil 611J disposed on the side opposite to the acoustic radiation side of the diaphragm 21J, and vibration directions of the voice coil 611J and the voice coil bobbin 610J. And the vibration direction of the diaphragm 21J is the same.
- 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 along the vibration direction (acoustic radiation direction) of the diaphragm 21J.
- the overall height of the speaker device must be relatively large.
- the size of the diaphragm 21J of the speaker device 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 a height from the upper surface of the yoke 51J to the yoke 51J, and the yoke 51J mainly includes a thickness (e) of the magnetic circuit.
- 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 vibration of the voice coil 611J is directly transmitted to the diaphragm 21J, that is, the vibration direction of the voice coil 611J and the vibration direction of the diaphragm 21J.
- the vibration direction of the voice coil 611J and the vibration direction of the diaphragm 21J are different, the vibration of the voice coil 611J may not be reliably transmitted to the diaphragm 21J, which causes a problem that the reproduction efficiency of the speaker device is deteriorated. Arise.
- a lead wire (such as a tinsel wire) is connected to the end of the voice coil 611J, and this lead wire is arranged on a frame. Pull out until connected. According to this, when the voice coil vibrates due to the audio signal, there is a problem that the lead wire vibrates accordingly and adversely affects the vibration of the voice coil.
- the present invention is an example of a problem to deal with such a problem. That is, to provide a thin speaker device that can radiate a large volume of reproduced sound with a relatively simple structure, to reliably transmit the vibration of the voice coil to the diaphragm, and to obtain a speaker device with high reproduction efficiency, It is another object of the present invention to input a voice signal to the voice coil without adversely affecting the vibration of the voice coil.
- the speaker device includes at least the configuration according to the following independent claims.
- [Claim 1] A diaphragm, a stationary part that supports the diaphragm so as to freely vibrate, and a driving part that is provided in the stationary part and that vibrates the diaphragm by an audio signal, A flat voice coil that receives an audio signal and vibrates in a direction different from that of the diaphragm, a magnetic circuit having a magnetic gap in which the voice coil is disposed, and rigidity that transmits the vibration of the voice coil to the diaphragm An audio signal input to an audio signal input terminal provided in the stationary part, and a holding part that holds the voice coil in the stationary part so that the voice coil vibrates linearly Is input to the voice coil through the holding unit.
- a speaker device is provided with a diaphragm, a stationary part that supports the diaphragm so as to freely vibrate along a vibration direction, and provides vibration to the diaphragm by an audio signal.
- a driving unit, and the driving unit receives a voice signal and vibrates in a direction different from the diaphragm, and a magnetic circuit having a magnetic gap in which the voice coil is disposed;
- a rigid vibration direction changing portion for transmitting the vibration of the voice coil to the diaphragm; and a holding portion for holding the voice coil on the stationary portion so that the voice coil vibrates linearly.
- An audio signal input to the audio signal input terminal is input to the voice coil via the holding unit.
- the vibration direction conversion unit functions to change the direction of the vibration of the voice coil and transmit it to the diaphragm.
- the diaphragm vibrates along a vibration direction different from the voice coil (for example, orthogonal to the voice coil) by the driving force transmitted through the vibration direction conversion unit.
- a voice coil bobbin is disposed on the back side of the diaphragm, and the vibration direction of the diaphragm and the vibration direction of the voice coil bobbin are configured in the same direction. Since the diaphragm and the voice coil bobbin require a region for vibration, the width of the speaker device along the sound radiation direction is relatively large.
- a magnetic circuit having a magnetic gap formed in a direction different from the vibration direction of the diaphragm, preferably in a direction orthogonal to the vibration direction of the diaphragm, and Since there is a voice coil that vibrates along the magnetic circuit, and a vibration direction converter that changes the direction of vibration of the voice coil and transmits it to the diaphragm.
- the width along is relatively small. That is, a thin speaker device can be provided.
- the vibration stroke of the voice coil can be set in a direction that does not affect the overall height of the speaker device, it is easy to achieve a thin speaker device even when the vibration stroke of the voice coil, that is, the amplitude of the diaphragm is increased. This makes it possible to achieve both a reduction in the thickness of the speaker device and an increase in volume.
- maintains a voice coil in a stationary part is provided so that a voice coil vibrates linearly
- maintenance part and vibrates linearly is provided.
- the vibration is transmitted to the diaphragm via the vibration direction converter, and the diaphragm can be vibrated efficiently.
- the lead wire that electrically connects the voice coil and the audio signal input terminal is the voice coil. It can be excluded that the vibration of the voice coil is adversely affected by the vibration of the voice coil. Further, since it is not necessary to provide a space for giving the extra length to the lead wire described above, the space in the frame as the stationary portion can be made compact, and the entire speaker device can be made smaller and thinner.
- connection wiring between the voice coil and the audio signal input terminal moves integrally with the holding part, this connection wiring interferes with the vibration member in the drive part, causing abnormal noise and disconnection of the wiring. Can be eliminated.
- the holding portion is made of a conductive metal, and is electrically connected to an end portion of the voice coil or a lead wire from the end portion, and the audio signal is formed at an end portion on the stationary portion side. It is electrically connected to an input terminal.
- the holding part itself is a connection wiring, it is not necessary to provide a separate wiring, and the end part connection to the stationary part side or the voice coil side of the holding part also serves as an electrical connection of the connection wiring. The process can be simplified.
- the metal member can provide high rigidity other than the vibration direction, the vibration of the voice coil can be reliably regulated.
- the holding portion is a curved plate-like member that allows elastic deformation in one direction along the vibration direction of the voice coil and restricts deformation in the other direction. According to this, elastic deformation is made along the bending direction of the curved plate-like member, but high rigidity can be imparted in the direction orthogonal thereto. According to this, the vibration direction of the voice coil can be regulated linearly with high accuracy by a simple processed member.
- the holding unit holds the voice coil symmetrically. According to this, it becomes possible to stably hold the voice coil that vibrates linearly without causing inclination or rolling.
- the left and right holding parts are integrated to hold one side of the voice coil edge. According to this, it is possible to reinforce one side of the edge of the voice coil by utilizing the characteristics of the holding part that exhibits high rigidity in a direction orthogonal to the vibration direction of the voice coil, and deformation or breakage of the voice coil during vibration And the durability of the speaker device can be improved.
- the vibration direction conversion unit includes a link mechanism that converts the angle of a link portion formed between the voice coil and the diaphragm by a reaction force received from the vibration of the voice coil and the stationary unit.
- the vibration of the voice coil is surely transmitted to the diaphragm while receiving the reaction force from the stationary part, and even if the vibration direction of the voice coil and the vibration direction of the diaphragm are different, it is good Vibration transmission efficiency can be obtained, and good reproduction efficiency of the speaker device can be obtained. In particular, it is possible to obtain good reproduction characteristics in the high sound range by reliably transmitting the vibration of the voice coil to the diaphragm.
- the frame has a flat bottom surface
- the diaphragm is supported in a plane along the bottom surface of the frame
- the magnetic gap is formed along the bottom surface of the frame
- the diaphragm is vibrated in a direction crossing the bottom surface by a reaction force from the bottom surface of the frame. According to this, the whole speaker apparatus can be made into a planar shape along the bottom surface of the frame, and the overall apparatus can be thinned.
- the magnetic circuit has a pair of magnetic gaps in which magnetic fields in opposite directions are formed, and the voice coil is formed in a planar shape so that current flows in the opposite direction through the pair of magnetic gaps. It is characterized by being formed in an annular shape. According to this, a planar voice coil can be vibrated planarly with a high driving force using a pair of magnetic gaps, and by increasing the planar rigidity of the voice coil, linear fluctuation is relatively small. Vibration is possible. In particular, in the case of having the above-described planar frame bottom surface, a thin space on the frame bottom surface can be used as a vibration space of the voice coil, and the space efficiency in the thickness direction can be improved.
- the drive unit is provided in a pair, and the vibration direction conversion units are arranged so as to face each other substantially symmetrically.
- FIGS. 7 and 9 are explanatory views showing specific examples of the voice coil holding mechanism.
- the acoustic radiation direction is defined as the Z-axis direction
- the longitudinal direction of the speaker device is the X-axis direction orthogonal to the Z-axis direction
- the direction orthogonal to the Z-axis direction and the X-axis direction is the Y-axis.
- the direction is specified.
- a speaker device 1 includes a diaphragm 2, a stationary part 100 that supports the diaphragm 2 so as to freely vibrate along a vibration direction, and the stationary part 100. And a drive unit 4 for applying vibration.
- the stationary part 100 is a general term for parts that support vibrations such as the diaphragm 2 and the driving part 4.
- the stationary part 100 includes a frame 3, a yoke part that also functions as the frame 3, and a later-described yoke part. It hits.
- the stationary part 100 itself is not intended to be completely stationary, but the whole stationary part 100 vibrates under the influence of the vibration of the driving part 4 or other force. Also good.
- the outer edge of the diaphragm 2 is supported by the outer peripheral edge 3 ⁇ / b> A of the frame 3, which is the stationary part 100, via the edge 5.
- the vibration direction of the diaphragm 2 is basically restricted only in the Z-axis direction by the function of the edge 5.
- the drive unit 4 includes a magnetic circuit 40, a voice coil 60, and a vibration direction conversion unit 7.
- the voice coil 60 vibrates in a uniaxial direction along the magnetic gap 40 G of the magnetic circuit 40, and the vibration is converted into a vibration direction.
- the part 7 changes its direction and transmits it to the diaphragm 2.
- the voice coil 60 vibrates along the X-axis direction, and the diaphragm 2 is arranged so as to be able to vibrate in the Z-axis direction orthogonal to the X-axis direction.
- the vibration in the direction is converted into an oblique angle that changes, and the diaphragm 2 is vibrated in the Z-axis direction.
- the magnetic circuit 40 forms a magnetic gap 40G along a direction (for example, the X-axis direction) different from the vibration direction (for example, the Z-axis direction) of the diaphragm 2.
- the magnetic gap 40G is formed along a direction orthogonal to the vibration direction of the diaphragm 2.
- the magnetic gap 40G is not limited to this, and the magnetic gap 40G is formed along a direction forming a predetermined angle. It may be formed.
- the voice coil 60 is formed in a flat plate shape by winding a conductive wire to which an audio signal is input, and is itself oscillated on the stationary portion 100 or is placed on the stationary portion 100 via the voice coil support portion 6. It is arranged so that it can vibrate freely.
- the voice coil support portion 6 is linearly restricted in vibration direction by a holding portion (damper) 8 and is allowed to move only in the direction along the magnetic gap 40G.
- the Lorentz force acts on the voice coil 60 in the magnetic gap 40G and vibrates integrally with the voice coil 60.
- the vibration direction converter 7 changes the direction of the vibration of the voice coil 60 and transmits it to the diaphragm 2.
- the vibration direction conversion portion 7 is formed at a both end of the link portion, and a rigid link portion that is obliquely provided so that the angle can be changed between the voice coil 60 or the voice coil support portion 6 and the diaphragm 2 as will be described later. And a link portion formed between the voice coil support portion 6 and the diaphragm 2 by the reaction of the vibration of the voice coil support portion 6 and the reaction force received from the stationary portion (the frame 3 in this embodiment). The angle of the (first link portion) 70 is changed.
- the holding unit 8 holds the voice coil 60 or the voice coil support unit 6 on the frame 3 serving as the stationary unit 100 so that the voice coil 60 vibrates linearly.
- the holding unit 8 forms a transmission path for transmitting an audio signal to the voice coil 60, and the audio signal input to the audio signal input terminal 9 provided on the frame 3 serving as the stationary unit 100 is received by the holding unit 8. Is input to the voice coil 60.
- an audio signal is sent from the audio signal generation source to the audio signal input terminal 9 provided in the frame 3, and further from the audio signal input terminal 9 via the holding unit 8 to the voice coil 60.
- the voice coil 60 or the voice coil support 6 vibrates along the magnetic gap 40G formed along a direction different from the allowable vibration direction of the diaphragm 2. This vibration is direction-converted by the vibration direction conversion unit 7 and transmitted to the diaphragm 2, and the diaphragm 2 is vibrated to emit a sound corresponding to the sound signal in the acoustic radiation direction SD.
- the driving force of the magnetic circuit 40 or the vibration stroke of the voice coil 60 or the voice coil support portion 6 is used. Is not directly affected by the size of the speaker device 1 in the thickness direction (Z-axis direction). Therefore, it is possible to reduce the thickness of the speaker device 1 while increasing the volume. Further, structurally, the thickness of the speaker device 1 can be made thinner than the vibration stroke of the voice coil 60 or the voice coil support portion 6, so that the thickness can be easily reduced.
- the vibration direction conversion unit 7 converts the vibration direction of the voice coil 60 or the voice coil support unit 6 and transmits it to the diaphragm 2 by a mechanical link mechanism, the vibration transmission efficiency is high. Furthermore, since the angle conversion of the link portion 70 is performed in response to the reaction force from the frame 3 serving as the stationary portion 100, vibration from the voice coil 60 or the voice coil support portion 6 can be more reliably transmitted to the diaphragm. . As a result, good reproduction efficiency of the speaker device 1 can be obtained, and in particular, good reproduction characteristics in the high sound range can be obtained by reliably transmitting the vibration of the voice coil 60 to the diaphragm 2.
- the audio signal input to the audio signal input terminal 9 provided in the frame 3 serving as the stationary unit 100 is input to the voice coil 60 via the holding unit 8, the voice coil 60, the audio signal input terminal 9, It is possible to eliminate that the lead wire that electrically connects is vibrated continuously with the vibration of the voice coil 60 and adversely affects the vibration of the voice coil 60. Further, since it is not necessary to provide a space for giving the extra length to the lead wire described above, the space in the frame 3 can be made compact, and the entire speaker device can be made smaller and thinner.
- the stationary part 100 supports the vibration plate 2 so as to vibrate freely along the vibration direction and also supports the driving part 4 inside.
- the frame 3 as the stationary part 100 supports a part of the link mechanism of the vibration direction changing part 7 and applies a reaction force from the frame 3 to the operation of the link mechanism.
- Such a frame 3 preferably has a planar bottom surface 31A.
- the frame 3 is also a stationary part 100 arranged in a stationary state with respect to the voice coil 60 or the voice coil support part 6.
- the stationary part 100 here does not intend the state which is completely stationary, but should just be stationary to the extent which can support the diaphragm 2, for example.
- the stationary part 100 may propagate vibration generated when driving the speaker device 1, and the vibration may be generated in the entire stationary part 100.
- the stationary part 100 only has to be arranged in a mechanically integrated manner with a magnetic circuit 40, which will be described later, and it can be said that the frame 3 is supported by the magnetic circuit 40, so the frame 3 becomes the stationary part 100, Further, the magnetic circuit 40 itself, a constituent member of the magnetic circuit 40, or a member supported by the magnetic circuit 40 can be the stationary portion 100.
- the frame 3 shown in FIG. 2 has a rectangular planar shape and a concave cross-sectional shape when viewed from the acoustic radiation direction (SD).
- the frame 3 includes a bottom plate portion 31 having a rectangular planar shape, and a rectangular tubular portion standing from the outer periphery of the bottom plate portion 31 toward the acoustic radiation direction (SD). 32, and an opening 30 is formed in the upper part.
- the magnetic circuit 40 is disposed on the bottom plate portion 31, the outer peripheral portion of the edge 5 is joined to the upper end portion of the cylindrical portion 32 with an adhesive or the like, and the opening portion 30 is supported via the edge 5.
- a diaphragm 2 is disposed.
- a flat outer peripheral edge 3A extending inward is formed at the upper end of the cylindrical portion 32, and an edge 5 is joined to the outer peripheral edge 3A.
- a material for forming the frame 3 for example, a known material such as resin or metal can be used.
- a yoke portion 41 constituting a magnetic circuit 4 described later may have the same shape as the frame 3 described above and support the edge 5 and the like.
- the frame 3 has a hole 33 formed in, for example, a side surface or a bottom surface.
- the hole 33 functions as a vent hole, for example.
- the air in the space surrounded by the diaphragm 2 and the frame 3 becomes springy with the vibration of the diaphragm 2, and the vibration of the diaphragm 2 may be reduced. is there.
- the hole 33 since the hole 33 is provided, such vibration reduction of the diaphragm 2 can be suppressed.
- the hole 33 functions to radiate heat from the magnetic circuit 40 and the voice coil 60.
- the frame 3 is provided with an audio signal input terminal 9.
- the audio signal input terminal 9 is connected to a signal line that is electrically connected to an audio signal generation source such as an amplifier, an equalizer, a tuner, a broadcast receiver, and a television provided outside the speaker device.
- the vibration plate 2 As shown in FIG. 2B, the vibration plate 2 is supported by the frame 3 so as to vibrate freely along the vibration direction (Z-axis direction).
- the diaphragm 2 emits sound waves in the acoustic radiation direction (SD) when the speaker is driven.
- the diaphragm 2 is supported by the frame 3 via the edge 5, and movement along the direction other than the vibration direction, specifically, along the X-axis direction and the Y-axis direction is restricted by the edge 5.
- the edge 5 and the diaphragm 2 may be integrally formed.
- the diaphragm 2 As a material for forming the diaphragm 2, for example, a resin material, a metal material, a paper material, a ceramic material, a composite material, or the like can be employed.
- the diaphragm 2 preferably has rigidity, for example.
- the diaphragm 2 can be formed in a defined shape such as a flat plate shape, a dome shape, or a cone shape.
- the diaphragm 2 is formed in a flat plate shape, and is supported along the planar bottom surface 31 ⁇ / b> A of the frame 3.
- a flat diaphragm 2 is particularly preferable.
- the diaphragm 2 can be formed in a specified shape such as a rectangular shape, an elliptical shape, a circular shape, or a polygonal shape (planar shape) viewed from the acoustic radiation direction (SD).
- a specified shape such as a rectangular shape, an elliptical shape, a circular shape, or a polygonal shape (planar shape) viewed from the acoustic radiation direction (SD).
- SD acoustic radiation direction
- the diaphragm 2 has a rectangular planar shape.
- the diaphragm 2 is supported by the frame 3 so as to freely vibrate, and a space surrounded by the diaphragm 2 and the frame 3 on the back side of the diaphragm 2 (the side opposite to the acoustic radiation direction) is relative to the acoustic radiation direction. Since it is interrupted, it is possible to prevent sound waves emitted from the back side of the diaphragm 2 from being emitted in the acoustic radiation direction, and to interfere with sound waves emitted from the front side (acoustic radiation surface) of the diaphragm 2. Can be suppressed.
- the edge 5 is disposed between the diaphragm 2 and the frame 3, the inner peripheral portion supports the outer peripheral portion of the diaphragm 2, and the outer peripheral portion is joined to the frame 3, thereby Hold in place. Specifically, the edge 5 supports the diaphragm 2 so as to vibrate along the vibration direction (Z-axis direction) and brakes in a direction orthogonal to the vibration direction.
- the illustrated edge 5 is formed in a ring shape when viewed from the acoustic radiation direction. As shown in FIG. 2B, the edge 5 has a cross-sectional shape that is a prescribed shape, such as a convex shape, a concave shape, or a corrugated shape.
- the edge 5 is formed in a concave shape in the acoustic direction.
- the edge 5 can employ, for example, leather, cloth, rubber, resin, those obtained by applying a sealing process thereto, rubber, resin, foamed resin, or the like molded into a prescribed shape.
- the magnetic circuit 40 is disposed inside the frame 3. 2B, the illustrated magnetic circuit 40 is accommodated in the frame 3, and a magnetic gap 40G is formed along the planar bottom surface 31A of the frame 3. As shown in FIG.
- the magnetic circuit 40 for example, an inner magnet type magnetic circuit, an outer magnet type magnetic circuit, or the like can be adopted.
- the specific structure of the magnetic circuit 40 includes a yoke portion 41 and a magnet 42 as shown in FIGS.
- the illustrated magnetic circuit 40 includes a plurality of magnets 42A to 42D.
- the magnets 42 are provided on both sides along the direction of the magnetic field of the magnetic gap 40G.
- the magnetic gap 40G is formed along the X-axis direction so that the voice coil 60 can move within a specified range along the X-axis direction.
- the yoke part 41 includes a lower flat part 41A, an upper flat part 41B, and a support part 41C.
- the lower flat portion 41A and the upper flat portion 41B are arranged substantially parallel to each other at a specified interval, and the column portion 41C is substantially perpendicular to the lower flat portion 41A and the upper flat portion 41B at the center. It is formed to extend to.
- the speaker device 1 When a voice signal (current) flows through the voice coil 60 in the magnetic field of the magnetic gap 40G, Lorentz force is generated along the direction orthogonal to the direction of the magnetic field and the direction of the current according to the Fleming left-hand rule.
- the speaker device 1 is along a specified direction different from the vibration direction of the diaphragm 2, specifically, a direction (X-axis direction) orthogonal to the vibration direction (Z-axis direction) of the diaphragm 2.
- the voice coil 60 and the magnetic circuit 40 are configured such that a Lorentz force is generated in the voice coil 60 and the voice coil 60 vibrates along the X-axis direction.
- Magnets 42A to 42D are arranged on the flat portions 41A and 41B.
- the magnet 42A and the magnet 42C form one magnetic gap 40G1, and the magnet 42B and the magnet 42D form another magnetic gap 40G2.
- the pair of magnetic gaps 40G1 and 40G2 are formed side by side in a plane, and magnetic fields in opposite directions are formed.
- the planar shape is formed in a substantially rectangular shape, and the linear portion 60A formed along the Y-axis direction. , 60C and linear portions 60B, 60D formed along the X-axis direction.
- the linear portions 60A and 60C of the voice coil 60 are disposed in the magnetic gap 40G of the magnetic circuit 40, and the direction of the magnetic field is defined so as to be along the Z-axis direction. It is preferable not to apply a magnetic field to the straight portions 60B and 60D of the voice coil 60. Further, even when a magnetic field is applied to the straight portions 60B and 60D, the Lorentz forces generated in the straight portions 60B and 60D are configured to cancel each other.
- the voice coil 60 according to the present embodiment is formed in a thin flat plate shape, and by relatively increasing the number of turns, the portion in the magnetic gap 40G can be relatively large, and the speaker is driven. A relatively large driving force can be obtained.
- the direction of the magnetic field applied to the linear part 60A of the voice coil 60 is opposite to the direction of the magnetic field related to the linear part 60C.
- a plurality of magnets 42A to 42D are magnetized.
- the voice coil 60 is formed in an annular shape so that a voice signal flows through each of the linear portion 60A and the linear portion 60C of the voice coil 60 in the opposite directions.
- the Lorentz force generated in the straight portion 60 ⁇ / b> A and the Lorentz force generated in the straight portion 60 ⁇ / b> C are in the same direction, for example, one of the straight portions 60 ⁇ / b> A and 60 ⁇ / b> C.
- the driving force is doubled. Therefore, the magnetic circuit 40 and the voice coil 60 having such a configuration can be configured to be relatively thin, and a relatively large driving force can be obtained.
- the voice coil support unit 6 includes the voice coil 60 described above and is formed to be movable along different directions with respect to the vibration direction of the diaphragm 2.
- the frame 3 is disposed so as to be capable of vibrating along a magnetic gap 40G formed along the planar bottom surface 31A of the frame 3.
- the voice coil support portion 6 according to the present embodiment is formed to be movable only along the X-axis direction, and movement is restricted in other directions.
- the voice coil support portion 6 has a planar insulation having a shape in which the voice coil 60 is disposed in the magnetic gap 40G of the magnetic circuit 40 and extends from the voice coil 60 to the outside of the magnetic gap 40G along the moving direction.
- a member 61 is provided.
- the voice coil support portion 6 has an opening 62, and a voice coil 60 is provided along the outer periphery of the opening 62. Since the voice coil support portion 6 having such a structure can have a structure in which the voice coil 60 is embedded in the insulating member 61, the strength of the voice coil 60 can be reinforced thereby. Distortion can be reduced.
- the opening 62 is loosely fitted to the support column 41C of the magnetic circuit 40, and the movement range of the voice coil support 6 is restricted in this state.
- the opening 62 is formed in a rectangular shape, and the interval between both sides along the moving direction of the voice coil support portion 6 is formed to be approximately the same as or larger than the width of the support column portion 41C.
- the interval between both sides in the direction orthogonal to the direction is formed to be relatively large corresponding to the movement range of the voice coil support 6.
- the vibration direction conversion section 7 is formed between the voice coil support section 6 and the diaphragm 2 by the vibration of the voice coil support section 6 and the reaction force received from the frame 3 as the stationary section 100.
- a link mechanism for changing the angle of the link portion (first link portion) 70 is provided. Specifically, in the example shown in FIGS.
- the first link portion 70 having one end as a joint portion 70 ⁇ / b> A with the voice coil support portion 6 and the other end as a joint portion 70 ⁇ / b> B with the diaphragm 2;
- the second link portion 71 has one end as a joint portion 71A with the intermediate portion of the first link portion 70 and the other end as a joint portion 71B with the frame 3, and the first link portion 70 and the first link portion 70
- the two link portions 71 are inclined in different directions with respect to the vibration direction (for example, the X-axis direction) of the voice coil support portion 6.
- the link part here is a part for forming a link mechanism and is basically a part that does not deform (has rigidity) and has joint parts at both ends thereof.
- the joint can be formed by joining two members in a rotatable manner, or can be formed as a refracted portion where one member can be refracted at an arbitrary angle.
- the joint portion 71 ⁇ / b> B is formed on the support portion 34 that is formed to protrude on the bottom surface 31 ⁇ / b> A of the frame 3 that becomes the stationary portion 100.
- the stationary portion 100 may be a yoke portion 41 instead of the frame 3, and when the yoke portion 41 is the stationary portion 100, the above-described support portion 34 is placed on the yoke portion 41. Be placed.
- a link mechanism is formed by the first link portion 70, the second link portion 71, and the joint portions 70A, 70B, 71A, 71B.
- the joint portion 71B between the second link portion 71 and the frame 3 is a joint portion where the position is not displaced, and the other joint portions 70A, 70B, 71A are joint portions whose positions are displaced.
- the entire link mechanism is structured to receive a reaction force from the frame 3 at the joint portion 71B.
- the vibration direction converter 7 can be formed by a plate-like member having a linear refracting portion, and this refracting portion can be a joint portion of the link mechanism described above. That is, in the illustrated example, the first link portion 70 and the second link portion 71 are formed by plate-like members, and the joint portions 70A, 70B, 71A, 71B of the link mechanism are formed by linear refracting portions. Can do. According to this, since the joint portion with the diaphragm 2 can be joined linearly, the planar diaphragm 2 can be uniformly vibrated along the width direction, and the entire diaphragm is substantially omitted. It is possible to vibrate with the same phase.
- each link portion has rigidity, vibrations in the natural vibration mode are less likely to occur, and the flexural vibration of the link portion is prevented from adversely affecting the vibration of the diaphragm 2, and acoustic characteristics are reduced. Can be suppressed.
- a vent hole may be formed, for example.
- the vent hole can reduce local fluctuations in the air pressure in the space surrounded by the diaphragm 2 and the frame 3 when the speaker vibrates, and suppresses the braking of the vibration direction conversion unit 7 due to the air pressure.
- a hollow portion is formed in the link portion by the vent hole, and the link portion can be reduced in weight, thereby enabling high-frequency reproduction.
- the weight reduction of the vibration direction conversion unit 7 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 air pressure (braking force) acting on the link portion can be made relatively small.
- the vibration direction changing part 7 may be made of an integral part connected by a refracting part.
- the vibration direction changing part 7 forming the complicated link mechanism can be immediately joined to the voice coil support part 6 and the diaphragm 2, and the assembly of the apparatus is improved.
- the vibration direction conversion part 7 can also be formed integrally with the voice coil support part 6 and the diaphragm 2, for example.
- FIG. 6 is an explanatory diagram for explaining the operation of the speaker device 1 according to the embodiment of the present invention. Specifically, FIG. 6B shows the state of the vibration direction converter 7 with the diaphragm 2 positioned at the reference position, and FIG. 6A shows the state where the diaphragm 2 is displaced toward the acoustic radiation side with respect to the reference position. FIG. 6C shows the state of the vibration direction conversion unit 7 in a state where the vibration plate 2 is displaced in the opposite direction with respect to the acoustic radiation side with respect to the reference position. Show.
- the joint portion 71B is the only joint portion whose position does not fluctuate, and is supported by the frame 3, and applies a reaction force from the frame 3 to the link mechanism.
- the voice coil support portion 6 moves from the reference position X0 by X1 in the X-axis direction, as shown in FIG. 6A
- the first link portion 70 and the second link portion 70 inclined in different directions are arranged.
- the angle of the link portion 71 rises at substantially the same angle, and the joint portion 70B reliably pushes up the diaphragm 2 from the reference position Z0 in the Z-axis direction by Z1 in response to the reaction force from the frame 3 at the joint portion 71B.
- the angle between the first link portion 70 and the second link portion 71 is almost equal.
- the joint portion 70B receives the reaction force from the frame 3 at the joint portion 71B, and the joint portion 70B reliably pushes down the diaphragm 2 from the reference position Z0 in the opposite direction to the Z axis by Z2.
- the length a of the link part from the joint part 70A to the joint part 71A, the length b of the link part from the joint part 71A to the joint part 70B, and the length c of the link part from the joint part 71A to the joint part 71B It is preferable that the joint portion 70A and the joint portion 71B are arranged on a straight line in the moving direction of the voice coil support portion 6 with the same.
- the angles formed by the joint portions 70A, 71B, 70B are always a right angle.
- the joint portion 70B between the first link portion 70 and the diaphragm 2 always moves along the Z-axis that is perpendicular to the X-axis.
- the vibration direction of the voice coil support 6 can be converted to a direction perpendicular to the vibration direction and transmitted to the diaphragm 2.
- the holding part 8 holds the voice coil support part 6 at a specified position in the magnetic gap 40G so that the voice coil support part 6 does not contact the magnetic circuit 40, and the voice coil support part. 6 is supported movably along the vibration direction (X-axis direction).
- the holding portion 8 restricts the voice coil support portion 6 from moving in a direction different from the vibration direction of the voice coil support portion 6, for example, in the Z-axis direction or the Y-axis direction.
- FIG. 7 to 9 are explanatory views showing specific examples of the holding mechanism of the voice coil support portion 6 by the holding portion 8.
- the holding portion 8 is formed of, for example, a conductive metal, and is electrically connected to the end of the voice coil 60 or the lead lines 60P and 60Q from the end at the end on the voice coil support portion 6 side.
- the audio signal input terminal 9 is electrically connected at the end on the side.
- the holding portion 8 itself may be a vibration wiring made of a conductive metal, or the holding portion 8 may be a wiring board (for example, a linear wiring is formed on the substrate). .
- the holding portion 8 is a curved plate-like member that allows deformation in one direction along the vibration direction of the voice coil support portion 6 and restricts deformation in the other direction. Are held approximately symmetrically.
- one end of each end of the holding portion 8 is attached to the voice coil support portion 6 side by the connection portion 8A, and the other end is attached to the frame 3 side by the connection portion 8B.
- the connection portions 8A and 8B are made of an insulator such as resin, and the lead wires 60P and 60Q drawn from the voice coil 60 are electrically connected to the holding portion 8 using solder or the like. 8 is electrically connected to the audio signal input terminal 9.
- connection portions 8A and 8B may form electrical connection terminals, and the connection portion 8A is connected to the end of the voice coil 60 or the lead wires 60P and 60Q drawn from the end.
- the unit 8B may be electrically connected to the audio signal input terminal 9.
- the lead wire used in the conventional speaker device vibrates when driving the speaker device, the lead wire is placed in a predetermined space in order to prevent the lead wire from contacting a member constituting the speaker device, for example, the frame 3J. Therefore, it is necessary to route the lead wire, which is one factor that hinders the thinning of the speaker device.
- the lead lines 60P and 60Q are formed on the voice coil support portion 6, there is no need to provide a predetermined space for routing the lead lines 60P and 60Q. Can be made thinner.
- the connecting portion 8B is formed with a plurality of grooves for attaching wiring from the outside.
- the other end of the holding portion 8 is attached to the connecting portion 8B, and the connecting portion 8B supports the holding portion 8 on the frame 3 so that the voice coil support portion 6 basically vibrates in the X-axis direction.
- the lead wires 60P and 60Q extend to the conductive holding portion 8 and are electrically connected to each other, it is possible to prevent the lead wires 60P and 60Q and the holding portion 8 from being disconnected. Can be improved.
- the holding portion 8 made of a conductive metal that is a curved plate member allows the movement of the voice coil support portion 6 in the direction along the X axis by deformation of the holding portion 8, and the curved plate in the direction along the Z axis. The movement is restricted by the high rigidity of the member. Therefore, the voice coil support 6 is always maintained at a predetermined height with respect to the frame 3 in the Z-axis direction. Also, by providing the holding portion 8 substantially symmetrically, the movement of the voice coil support portion 6 in the Y direction is in a balanced state due to the elastic force of the holding portion 8, which is also in a predetermined position with respect to the frame 3. Is retained.
- the left and right holding parts are integrated to hold one side 6a of the edge of the voice coil support part 6 (the same parts as those in the example shown in FIG. (Omitted). That is, the integrated holding part 80 which integrated the right and left holding part is provided.
- the integral holding portion 80 is a plate-like member formed in a corrugated shape, and a slit 80B is formed along one side 6a of the voice coil support portion 6, and the entire side 6a described above is held in the slit 80B.
- both ends 80 ⁇ / b> A and 80 ⁇ / b> A of the integrated holding unit 80 are connected to the frame 3. As a result, the deformation and breakage of the voice coil support portion 6 are suppressed by the rigidity in the direction along the Z-axis of the integral holding portion 80 in which the waveform is formed.
- FIG. 9 In the example shown in FIG. 9 (FIG. 9A is a rear perspective view and FIG. 9B is a front perspective view), the voice coil support 6 is attached to the frame via an attachment unit 81, and the connection unit 82.
- the voice coil support unit 6 and the vibration direction conversion unit 7 are connected to each other.
- a connection unit 82 is attached to one end edge 6 b (X-axis direction front end portion) in the vibration direction of the voice coil support portion 6, and inner ends 8 a and 8 a of the holding portions 8 and 8 on the left and right sides of the connection unit 82, respectively.
- terminal portions 60P1 and 60Q1 of the lead wires 60P and 60Q are formed on the voice coil support portion 6, and the terminal portions 60P1 and 60Q1 are electrically connected to the inner ends 8a and 8a of the holding portion 8 described above. .
- the rear ends of the voice coil support portion 6 in the X-axis direction are connected to the outer ends 80a and 80a of the integral holding portion 80 at both left and right ends, and the central portion 80b of the integral holding portion 80 is located behind the mounting unit 81 in the X-axis direction. It is connected to a mounting end 81A provided at the end.
- convex protrusions (supporting portions) 6a1 and 6a1 are formed on both side ends of the vibration direction other end edge (one side 6a) of the voice coil supporting portion 6 toward the integrated holding portion 80, and are integrated.
- Slits (supported portions) 80a1 and 80a1 for supporting the protruding portions 6a1 and 6a1 are formed at both side end portions 80a and 80a of the holding portion 80, and the protruding portions 6a1 and 6a1 are inserted into the slits 80a1 and 80a1.
- the attachment unit 81 is attached inside the frame 3. According to this, after attaching each part to the attachment unit 81 and integrating them, they are collectively attached to the frame 3, so that the positioning process at the time of manufacture can be simplified and the manufacturing time can be shortened. . Further, since the integral holding portion 80 does not protrude outward with respect to the width direction of the voice coil support portion 6, it is possible to reduce the size in the width direction.
- the mounting unit 81 is disposed so as to surround both side edges along the vibration direction of the voice coil support 6 and the other end edge (one side 6a) of the voice coil support 6 in the vibration direction.
- the ends of the holding portion 8 are attached to the connecting portions 83 and 83 located outside the both side edges along the vibration direction of the voice coil support portion 6 of the attachment unit 81, and the vibration direction of the voice coil support portion 6 of the attachment unit 81 is
- the central end portion 80b of the integrated holding portion 80, in which the left and right holding portions are integrated, is supported on the attachment end portion 81A located outside the other end edge (one side 6a), and the voice coil support portion 6 is framed via the attachment unit 81. 3 is attached.
- a convex support portion 81A1 is formed on the inner side surface 86 of the attachment end portion 81A toward the integral holding portion 80, and a slit (supported portion) supported by the support portion 81A1 is formed at the center of the integral holding portion 80. ) 80b1 is formed.
- the mounting unit 81 is provided on the frame 3 so as to surround the lower side of the voice coil support portion 6 and the periphery thereof.
- the attachment unit 81 extends from the connection portion 83 to the rear in the X-axis direction, the audio input terminal 9 to which external connection wiring is attached, the columnar connection portion (post) 83 to which the outer end 8b of the holding portion 8 is attached.
- an attachment end portion 81 ⁇ / b> A supported by the arm portion 84.
- the attachment end portion 81 ⁇ / b> A includes a bottom surface portion 85 that is supported by the arm portion 84, and an inner side surface 86 that extends from the bottom surface portion 85 in the Z-axis direction.
- the central portion 80b of the integral holding portion 80 is attached to the inner side surface 86.
- the attachment end portion 81A has a substantially U-shaped cross section.
- the integral holding portion 80 is placed at a fixed position on the frame 3.
- the voice coil support 6 can be supported with respect to the frame 3 while being held.
- positioning can be performed by using the convex support portion 80A1 of the attachment end portion 81A, and the integral holding portion 80 is disposed at a predetermined position on the frame. Can do.
- FIGS. 10A, 10 ⁇ / b> B, and 11 show examples of the configuration of the vibration direction converter in the embodiment of the present invention. Portions common to the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted.
- Each of the embodiments shown in FIGS. 10A, 10 ⁇ / b> B, and 11 has two features, one of which is that vibration direction conversion sections 7 are provided at both ends of the voice coil support section 6 in the vibration direction.
- a parallel link is formed by the link portions of the vibration direction conversion units 7 provided at both ends, and another feature is that a pair of drive units 4 are provided and the vibration direction conversion units 7 are arranged symmetrically opposite each other. It is that.
- the speaker devices 1S and 1T shown in FIGS. 10A and 10B include a pair of left and right drive units 4 (R) and 4 (L) for one diaphragm 2, respectively.
- 4 (R) and 4 (L) are provided symmetrically. That is, the drive unit 4 (R) is provided with the magnetic circuit 40 (R) and the voice coil support unit 6 (R), and the end of the voice coil support unit 6 (R) on the center side of the diaphragm 2 is the first.
- One link portion 70 (R) and a second link portion 71 (R) are provided, and one end is a joint with the voice coil support portion 6 (R) at the outer end portion of the voice coil support portion 6 (R).
- An outer link portion 72 (R) having a portion 72A (R) and the other end of the joint 72B (R) with the diaphragm 2 is provided.
- the drive unit 4 (L) is provided with a magnetic circuit 40 (L) and a voice coil support 6 (L), and at the end of the voice coil support 6 (L) on the center side of the diaphragm 2.
- a first link portion 70 (L) and a second link portion 71 (L) are provided, and one end of the voice coil support portion 6 (L) is connected to the voice coil support portion 6 (L).
- An outer link portion 72 (L) having a joint portion 72A (L) and a joint portion 72B (L) with the diaphragm 2 at the other end is provided.
- the speaker apparatus 1S shown to Fig.10 (a) is a 1st link part in the vibration direction conversion part provided in the diaphragm 2 center side edge part of the voice coil support parts 6 (R) and 6 (L).
- the joint portion 70B with the diaphragm 2 of 70 (R) and 70 (L) is a common portion, and the joint portion 71B with the frame 3 of the second link portions 71 (R) and 71 (L) is common.
- a rhombus-shaped link mechanism is formed by the joint portions 70B, 71A (R), 71A (L), 71B, and the voice coil support portions 6 (R), 6 (L) are close to each other along the X-axis direction.
- the direction of the separated vibration is changed to give the vibration in the Z-axis direction (acoustic radiation direction) to the diaphragm 2.
- the joint portion 71B is supported by the frame 3, the first link portion 70 (R) against the proximity / separation vibration of the voice coil support portions 6 (R) and 6 (L).
- 70 (L) and the second link portions 71 (R), 71 (L) receive a reaction force from the frame 3, and the reaction force reliably vibrates the diaphragm 2 in the Z-axis direction. ing.
- first link portion 70 (R) and the outer link portion 72 (R) provided on both sides in the vibration direction of one voice coil support portion 6 (R), or both sides in the vibration direction of the voice coil support portion 6 (L).
- the first link portion 70 (L) and the outer link portion 72 (L) provided in the above form a parallel link, and the voice coil support portions 6 (R) and 6 (L) move in the X direction.
- the first link portion 70 (R) and the outer link portion 72 (R) that are substantially parallel to each other, or the first link portion 70 (L) and the outer link portion 72 (L) are angle-converted at substantially the same angle. Become.
- the three joint portions 70B, 72B (R), 72B (L) move up and down while maintaining the planar state of the diaphragm 2, and cause the planar diaphragm 2 to vibrate in substantially the same phase. Is possible. Thereby, it becomes possible to suppress the divided vibration of the diaphragm 2.
- the vibration of the pair of voice coil support portions 6 (R) and 6 (L) is required to vibrate in opposite directions with substantially the same phase and substantially the same amplitude.
- the joint portion 70B is separated into the joint portions 70B (R) and 70B (L) and spaced apart, and the joint portion 71B is connected to the joint portions 71B (R) and 71B (
- the speaker device 1S is the same as the speaker device 1S shown in FIG. Accordingly, the speaker equipment 1T shown in FIG. 10B has the same function as the speaker device 1S shown in FIG. 10A, but the speaker device 1T has four joint portions 70B (R) that move up and down simultaneously. , 70B (L), 72B (R), 72B (L), the diaphragm 2 moves up and down, so that the divided vibration of the diaphragm 2 can be further suppressed.
- FIG. 11 is the same as the embodiment shown in FIG. 11 except for the link mechanism of the outer link portion (the illustrated example shows a configuration example corresponding to FIG. Similarly, the configuration example corresponding to Fig. 10 (b) can be implemented by changing only the outer link portion.
- FIG. 4A is an overall cross-sectional view
- FIGS. 2B and 2C are explanatory views showing the joint portion between the outer link portion and the frame.
- the outer link portion includes first outer link portions 72 (R) and 72 (L) and second outer link portions 73 (R) and 73 (L).
- a pair of drive units 4 (R) and 4 (L) that are substantially symmetrical is provided.
- one end is a joint portion 72A (R) or 72A (L) with the outer portion of the voice coil support portion 6 (R) or 6 (L), and the other end is the diaphragm 2.
- Second outer link portions 73 (R), 73 (L) having joint portions 73A (R) or 73A (L) with the portion and joint portions 73B (R) or 73B (L) with the other end of the frame 3 ).
- the joint portions 73 ⁇ / b> B (R) and 73 ⁇ / b> B (L) are supported by the frame 3 via the support portion 35.
- the joint portions 73B (R) and 73B (L) between the second outer link portions 73 (R) and 73 (L) and the frame 3 will be described.
- FIG. (R) has an opening 63, and the end of the second outer link portion 73 (R) may be supported by the frame 3 via the support 35 via the opening 63, or
- the second outer link portion 73 (R) is formed in a gate shape at the end and straddles the voice coil support portion 6 (R), and the end portion is supported by the frame 3.
- the right side (R) is shown in the figure, but the left side is the same (substantially left-right symmetric)).
- the link mechanism that receives the reaction force from the frame can be formed even at the link portion of the outer end portion of the voice coil support portions 6 (R) and 6 (L). Since the first outer link portions 72 (R) and 72 (L) are angle-converted using the reaction force from the frame 3 with respect to the movement of 6 (R) and 6 (L), the diaphragm is surely 2 can be moved up and down.
- the link mechanism including the first link portions 70 (R) and 70 (L) and the second link portions 71 (R) and 71 (L) is used as the voice coil support portion 6 (R).
- 6 (L) always receives a reaction force from the frame 3 when moving along the X-axis direction, so that the diaphragm 2 is moved when the diaphragm 2 is moved up and down (moved in the Z-axis direction). It is possible to prevent the voice coil support portions 6 (R) and 6 (L) from moving up and down due to the reaction force received from. As a result, the voice coil support portions 6 (R) and 6 (L) can be smoothly vibrated, and this vibration can be smoothly transmitted to the diaphragm 2.
- FIG. 12 is an explanatory view showing a part of the speaker device according to the embodiment of the present invention (FIG. 12 (a) is a side view, and FIGS. 12 (b) and (c) are plan views of the vibration direction changing unit). .
- FIG. 12 (a) is a side view
- FIGS. 12 (b) and (c) are plan views of the vibration direction changing unit).
- FIGS. 12 (b) and (c) are plan views of the vibration direction changing unit.
- This vibration direction changing part has a first link part 170 having one end as a joint part 170A with the voice coil support part 6 and the other end as a joint part 170B with the diaphragm 2, and one end as a first link part 170.
- a second link portion 171 having a joint portion 171A with the intermediate portion and a joint portion 171B with the other end of the frame 3, and a voice coil support portion 6 extending integrally therewith.
- a third link portion 172 consisting of a part of the second link part, a fourth link part 173 fixed along the diaphragm 2 or consisting of a part of the diaphragm 2, and one end of the third link part 172 as the end of the third link part 172
- the fifth link portion 174 has a joint portion 174A with the other portion and the other end has a joint portion 174B with the fourth link portion 173.
- the fourth link portion 173 forms a parallel link, respectively.
- the Z-axis at the two joint portions 170B and 174B and the fourth link portion 173 in which the vibration in the X-axis direction of one voice coil support portion 6 vibrates with substantially the same phase and substantially the same amplitude. It will be converted into vibration in the direction.
- the diaphragm 2 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 portion 6 with respect to the planar diaphragm 2 having a large area is provided. Can be transmitted in substantially the same phase.
- each link portion can be formed by a plate-like member as shown in FIGS. 12 (b) and (c).
- Each joint portion may be one in which the link portions are joined so as to be rotatable, or the link portions may be connected or integrated in a refractive manner.
- the plate-like member is preferably a highly rigid and lightweight member, and a fiber reinforced plastic film or the like can be used.
- the third link portion 172, the fourth link portion 173, and the fifth link portion 174 are arranged in parallel with each other, and the first link portion 170 is formed in a bifurcated manner.
- a joint portion 171A with the second link portion 171 is formed in the middle portion of the lever, and the second link portion 171 includes a third link portion 172, a fourth link portion 173, and a third link portion 172 arranged in parallel with each other. Between the five link portions 174.
- the third link portion 172, the fourth link portion 173, and the fifth link portion 174 are arranged at the center, and the joint portion is located at the middle position on both sides of the first link portion 170.
- 171A is provided, and the second link portion 171 is formed on both sides of the first link portion 170 extending at the center.
- the link portion By forming the link portion with a single plate-like member in this way, the diaphragm 2 can be supported and vibrated on the surface, and hence the entire diaphragm 2 can be vibrated substantially in the same phase. It becomes possible to suppress vibration.
- a link part can also be formed with a some plate-shaped member, a manufacturing process can be simplified by forming with one plate member. When the link portion is formed by one plate-like member, the link portion may be cut out from one flat plate-like member.
- FIG. 13 is an explanatory view showing a part of the speaker device according to the embodiment of the present invention (FIG. 13 (a) is a side view, FIG. 13 (b) is a perspective view, and FIG. 13 (c) is an exploded perspective view. ).
- FIG. 13 (a) is a side view
- FIG. 13 (b) is a perspective view
- FIG. 13 (c) is an exploded perspective view.
- FIG. 13 (c) is an explanatory view showing a part of the speaker device according to the embodiment of the present invention
- FIG. 13 (a) is a side view
- FIG. 13 (b) is a perspective view
- FIG. 13 (c) is an exploded perspective view.
- FIG. 13 (a) is a side view
- FIG. 13 (b) is a perspective view
- FIG. 13 (c) is an exploded perspective view.
- the vibration direction changing unit that changes the direction of the vibration of the voice coil support unit 6 and transmits the vibration to the diaphragm 2
- one end is a joint part 270A (R), 270A (L) with the voice coil support part 6, and the other end is a joint part 270B (R), 270B ( L) and a pair of first link portions 270 (R) and 270 (L).
- One end is a joint part 271A (R), 271A (L) with an intermediate part of the first link parts 270 (R), 270 (L), and the other end is a frame 3 (a sixth link part 275 described later).
- a pair of second link portions 271 (R) and 271 (L) as joint portions 271B (R) and 271B (L).
- a pair of third link portions 272 (R) and 272 (L) integrally extending from the voice coil support portion 6 and a fourth link portion 273 fixed along the diaphragm 2 are provided.
- a pair of fifth link portions 274 (R) and 274 (L) are provided as (R) and 274B (L).
- joint portions 270B (R) and 270B (L) of the first link portion 270 and the diaphragm 2 (fourth link portion 273) are formed at both ends of the fourth link portion 273, and the second link
- the joint portions 271B (R) and 271B (L) between the portions 271 (R) and 271 (L) and the frame 3 have a length substantially equal to that of the fourth link portion 273. 6 link portions 275 are formed at both ends.
- first link portion 270 (R) and the fifth link portion 274 (R) or the first link portion 270 (L) and the fifth link portion 274 (L) form a parallel link
- the three link portions 272 (R), 272 (L) and the fourth link portion 273 each form a parallel link.
- Such a link mechanism of the vibration direction changing portion is substantially equivalent to the link mechanism of the embodiment shown in FIG. 12 which is disposed substantially symmetrically opposite to each other and the joint portions 174B are spaced apart.
- each link portion is formed by a plate-like member
- each joint portion between the link portions is formed by a linear refracting portion
- the link portions are integrally formed via the refracting portion.
- an inclined surface is formed at the end of each link portion in the vicinity of each joint portion.
- the inclined surface is formed on the side surface opposite to the side surface of the link portion that approaches each other when the link portion is refracted at the joint, so that the link portion can be refracted efficiently at the joint.
- the vibration direction conversion part which has such a link mechanism is an integral part as shown in FIG.13 (b), and the junction part 200 of the voice coil support part 6 is formed in the edge part.
- the vibration direction conversion part of this embodiment refracts the whole one plate-shaped member which forms a link part to convex base shape, and makes 1st link part 270 (R), 270 (L) and 4th link. A portion 273 is formed, and the plate-like member is partially cut out and refracted into a concave shape to form second link portions 271 (R) and 271 (L) and a sixth link portion 275.
- the vibration direction changing portion is formed by bonding two plate-like members 201 and 202, and the first link portion 270 (R ), 270 (L), the second link portion 271 (R), 271 (L), the fourth link portion 273, and the sixth link portion 275, and the other plate-like member 202 has a third Link portions 272 (R) and 272 (L) and fifth link portions 274 (R) and 274 (L) are formed.
- 274 (L) and the opening 202 A corresponding to the second link portions 271 (R), 271 (L) and the sixth link portion 275 is formed in the plate member 202.
- the link mechanism of the vibration direction changing unit can be formed only by mounting one integral part to the two opposing voice coil support units 6, a speaker having a pair of drive units The assembly work can be easily performed even when the apparatus is formed.
- the joint portion is particularly resistant to the opposing vibration of the voice coil support portion 6 (a plurality of voice coil support portions 6 vibrate in substantially the same phase in opposite directions to each other). Even if 271B (R) and 271B (L) are not attached to the frame 3, the positions of the joint portions 271B (R) and 271B (L) on the frame 3 are always kept constant.
- the incorporation of the vibration direction converter into the speaker device can be simplified.
- the link mechanism As the link mechanism, the first link portion 270 (R) and the third link portion 274 (R) on the right side, the first link portion 270 (L) and the third link portion 274 (L) on the left side are provided.
- the fourth link portion 273 fixed to the diaphragm 2 can be stably translated along the Z-axis direction against the opposing vibration of the voice coil support portion 6. .
- the embodiment shown in FIG. 14 is an improved example of the embodiment shown in FIG.
- the convex portion 210 is provided on the link portion where bending easily occurs due to the opposing vibration of the voice coil support portion 6 to increase the rigidity.
- the first link portions 270 (R), 270 (L), the second link portions 271 (R), 271 (L), the third link portions 272 (R), 272 (L), Protrusions 210 are provided on the sixth link portions 275, respectively.
- an opening 220 is provided in a link portion that does not particularly require strength, thereby reducing the weight of the vibration direction changing portion.
- an opening 220 is provided in the fourth link portion 273.
- 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.
- FIG. 15 to FIG. 17 are explanatory views (plan views in a state in which the diaphragm is omitted) showing an embodiment of the present invention (the same parts as those in the above-described embodiment are denoted by the same reference numerals, and redundant description is omitted). ).
- the example shown in FIG. 15 employs the holding mechanism of the holding unit 8 shown in FIG.
- the frame 3 serving as the stationary part 100 is a frame having a minimum size that can surround the diaphragm (not shown) and support the magnetic circuit 40.
- connection portions 8A and 8B are provided at both ends of the holding portion 8, the connection portion 8B is attached to the inner surface of the frame 3, and the connection portion 8A is attached to the voice coil support portion 6.
- a lead wire from the voice coil 60 supported by the voice coil support portion 6 is connected to an input signal line (not shown) connected from the outside of the frame 3 through the connection portion 8A through the holding portion 8 and the connection portion 8B.
- the example shown in FIG. 16 is the same as the example shown in FIG. 15 except that the holding mechanism of the holding unit 8 shown in FIG. 8 is adopted.
- the integral holding part 80 is attached to one side 6 a of the voice coil support part 6, and connecting parts 8 A and 8 A provided at both ends of the integral holding part 80 are attached to the frame 3. In the example shown in FIG.
- the holding mechanism shown in FIG. 9 is adopted, the voice coil support 6 is connected to the frame 3 via the mounting unit 81, and the voice coil support is connected via the connecting unit 82. 6 and the vibration direction conversion part 7 are connected.
- the attachment unit 81 integrally supports the left and right drive units and can be attached to the frame 3 integrally.
- vent holes 70P or 72P are formed in the link portion 70 or 72, and the air resistance when the link portion 70 or 72 changes the angle by the vibration of the voice coil support portion 6 is adjusted. It comes to reduce.
- FIG. 18 is a modification of the embodiment shown in FIG. 10 (a) (the parts common to those in FIG. 10 (a) are given the same reference numerals and redundant description is omitted).
- a member that supports the edge 5 or the like is formed by a yoke portion 410 that is a constituent member of the magnetic circuit 40.
- the yoke part 410 is also the stationary part 100 arranged in a state of being stationary with respect to the voice coil support part 6.
- the yoke portion 410 includes a bottom surface portion 410A that faces the diaphragm 2 and a side surface portion 410B that surrounds the bottom surface portion 410A.
- a convex portion 410S is formed on the bottom surface portion 410A, and the magnetic gap 40G in which the voice coil support portion 6 slides is formed between the convex portion 410S and the magnet 42.
- a support portion 411 is formed on the bottom surface portion 410A of the yoke portion 410, and the joint portion 71B of the second link portion 71 is supported by the support portion 411, and the reaction force from the yoke portion 410 that becomes the stationary portion 100 is generated. is recieving.
- the outer edge portion of the edge 5 is supported by the yoke portion 410 by being attached to the top portion 410C of the side surface portion 410B of the yoke portion 410.
- the yoke portion 410 serving as the stationary portion 100 does not indicate a completely stationary state, but may be stationary so that the diaphragm 2 can be supported, for example, and drives the speaker device 1V.
- the vibration generated at the time may propagate and the vibration may be generated in the entire stationary portion.
- the stationary part 100 may be the attachment unit 81.
- FIG. 19 to 27 are explanatory views showing a speaker device 1W according to another embodiment of the present invention
- FIG. 19 is a top view
- FIG. 20 is a cross-sectional view taken along line XX
- FIG. 21 is a rear view
- FIG. 23 is a bottom view with the second component removed
- FIGS. 24 and 25 are exploded perspective views of the main part
- FIGS. 26 (a) and 26 (b) are the main part.
- FIG. 27 is an exploded perspective view of the entire speaker device). Portions that are the same as those described above are assigned the same reference numerals, and redundant descriptions are omitted.
- the speaker device 1W includes a terminal member 91 and a wiring 92 for inputting an audio signal input from the outside as an audio signal input terminal provided in the stationary unit 100 described above.
- the diaphragm 2 is formed in a rectangular shape as viewed from the acoustic radiation direction, and has an elliptical outer shape in the vicinity of the center and a curved portion 2 ⁇ / b> A having a concave cross-sectional shape.
- the bending direction of the diaphragm 2 and the direction of vibration of the voice coil 60 have a predetermined bending rigidity.
- the concave curved portion 2A in the diaphragm 2 the density in the curved portion 2A becomes larger than the density in a part of the other diaphragm 2, and the rigidity can be relatively increased.
- the curved portion 2A is formed between the pair of joint portions 274B formed between the vibration direction conversion portion 7 and the diaphragm 2. ing.
- the diaphragm 2 Since the diaphragm 2 has rigidity (including bending rigidity) in the vibration direction of the diaphragm 2, the occurrence of deflection of the diaphragm 2 is suppressed, a phase difference is generated between sound waves, and divided vibration is generated. It is possible to suppress degradation of acoustic characteristics due to occurrence. Further, the bending portion 2 ⁇ / b> A is formed on the diaphragm 2 between the pair of joint portions 274 ⁇ / b> B formed between the diaphragm 2 and the vibration direction conversion section vibration direction conversion section 7. Can be deterred.
- the diaphragm 2 is formed in a substantially rectangular shape having a short axis along the vibration direction of the voice coil 60 and a long axis along a direction orthogonal to the vibration direction of the voice coil 60.
- a reinforcing portion (not shown) may be formed along the axial direction.
- the reinforcing portion is, for example, a groove portion having a V-shaped cross section or other shape, and is formed in a linear shape, an annular shape, or a lattice shape with respect to the front surface or the back surface of the diaphragm 2.
- a filler such as a dumping agent (damping agent, braking material) may be applied (applied).
- the rigidity (including bending rigidity) of the diaphragm 2 can be improved, and the peak dip of the sound pressure frequency characteristic of the speaker can be reduced.
- a fiber member (not shown) made of a nonwoven fabric or the like may be attached.
- the rigidity (bending rigidity) of the diaphragm 2 can be improved, and when the diaphragm 2 vibrates, the vibration or air resistance propagates from the vibration direction changing part. It is possible to suppress deformation such as deflection in the diaphragm 2.
- the internal loss of the diaphragm 2 can be improved by providing the reinforcing portion.
- the diaphragm 2 is formed of a first layer made of a foamed resin made of an acrylic resin and the like, and a second layer made of a fiber-based member such as glass fiber. It has a laminated structure sandwiched between a pair of second layers.
- a material for forming the diaphragm 2 for example, a resin material, a metal material, a paper material, a fiber material, a ceramic material, a composite material, or the like can be used as a material for forming the diaphragm 2, for example, a resin material, a metal material, a paper material, a fiber material, a ceramic material, a composite material, or the like can be used.
- An edge 5 that supports the diaphragm 2 to be freely vibrated on the frame 3 that is the stationary part 100 is disposed between the diaphragm 2 and the frame 3, and an inner peripheral part thereof supports an outer peripheral part of the diaphragm 2,
- the outer peripheral portion is joined to the frame 3 directly or via another member, thereby holding the diaphragm 2 at a specified position.
- the other member include an elastic member (including a resin member) having a function as a packing, an adhesive resin, and the like.
- the edge 5 supports the diaphragm 2 so as to vibrate along the vibration direction (Z-axis direction) and brakes in a direction orthogonal to the vibration direction (Y-axis direction).
- the edge 5 is formed in a ring shape (annular) as viewed from the acoustic radiation direction, and its cross-sectional shape is formed in a prescribed shape, for example, a concave shape, a convex shape, or a corrugated shape in the acoustic radiation direction.
- a material for forming the edge 5 for example, a known material such as leather, cloth, rubber, resin, a material obtained by applying a sealing process thereto, or a member formed by molding rubber or resin into a prescribed shape may be used. it can.
- a protrusion or a concave shape that protrudes toward the front surface (the surface on the acoustic emission side) or the rear surface (the surface opposite to the acoustic emission side) is formed on a part or the entire circumference of the edge 5, The rigidity in the prescribed direction of 5 may be improved.
- the stationary part 100 includes a first component member (first frame) 110 disposed on the diaphragm 2 side and a second component member (second frame) 120 disposed to face the first component member 110.
- the drive unit 4 is supported so as to be sandwiched between the first component member 110 and the second component member 120.
- the magnetic circuit 40 has a pair of magnetic pole members (a yoke portion 41 and a magnet 42) disposed in the vicinity of the voice coil 60, and these magnetic pole members are separated so that the first component member 110 and the second constituent member 110 are separated from each other.
- Each component member 120 is supported.
- the voice coil 60 is held by the mounting unit 81 via the holding portion 8, and the voice coil 60 is attached to either the first component member 110 or the second component member 120, thereby the voice coil 60. Is held at a predetermined position with respect to the stationary part 100.
- the stationary portion 100 includes an outer peripheral frame portion 101 that surrounds the diaphragm 2 and a bridging portion 102 that bridges the inside of the outer peripheral frame portion 101.
- the bridging portion 102 is connected to the link mechanism 7L (vibration direction converting portion 7) described above. A reaction force is applied and rigidity is provided in the vibration direction of the link mechanism 7L. Further, as the vibration direction conversion unit 7, an integrated part shown in FIG. 13 is adopted.
- the link mechanism 7L for converting the angle of the link portions 270, 271, 274 is the diaphragm. Receives reaction force from 2.
- the link mechanism 7L receives such a reaction force, the link mechanism 7L itself vibrates when the stationary part 100 supporting the link mechanism 7L bends, and the link mechanism 7L transmits unnecessary vibration to the link portion 51. Will do. If unnecessary vibrations transmitted to the link portions 270, 271, 274 are transmitted to the diaphragm 2, the vibrations of the voice coil 60 cannot be efficiently transmitted to the diaphragm 2.
- the bridging portion 102 In order for the bridging portion 102 to support the link mechanism 7L and to be rigid with respect to the force received from the diaphragm 2 via the link mechanism 7L, in the vibration direction of the diaphragm 2, with respect to the compliance of the outer peripheral frame 101.
- the compliance of the bridging portion 102 is preferably substantially the same or small. 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 2 or the magnetic circuit 40.
- the bridging portion 102 provided in the second component 3C is formed with a first protruding portion 102A that protrudes in the extending direction and in the vibration direction of the diaphragm 2.
- 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 the first projecting portion 102 ⁇ / b> A is formed in the plane of the bridging portion 102 facing the diaphragm 2.
- 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 2.
- the reinforcement 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 3B is a second outer peripheral portion that supports the diaphragm 2 inside the first outer peripheral frame portion 101A, with the outer peripheral frame portion 101 in the stationary portion 100 as the first outer peripheral frame portion 101A. 101B.
- the opening inside the second outer peripheral frame portion 101 ⁇ / b> B is blocked by the edge 5 and the diaphragm 2.
- a protruding portion 101B1 that protrudes in the acoustic radiation direction is formed on the second outer peripheral frame portion 101B on which the diaphragm 2 is supported via the edge 5, a protruding portion 101B1 that protrudes in the acoustic radiation direction is formed.
- the protrusion 101B1 obtains rigidity for supporting the periphery of the diaphragm 2.
- the first structural member 3B and the second structural member 3C that become the stationary part 100 have a planar shape having a major axis and a minor axis, and the bridging part 102 is formed along the minor axis direction. Further, the bridging portion 102 can be formed along the long axis direction, or can be formed along the long axis direction and the short axis direction, and the rigidity of the stationary portion 100 can be obtained.
- Convex portions 100m are formed at the four corners of the first constituent member 3B, and concave portions 100n are formed at the four corners of the second constituent member 3C, and the convex portions 100m and the concave portions 100n are fitted together to form the first configuration.
- the member 3B and the second component member 3C are coupled.
- the convex portion 100m may be formed on one of the first constituent member 3B and the second constituent member 3C, and the concave portion 100n may be formed on the other of the first constituent member 3B and the second constituent member 3C.
- the recess 100n may be formed as a hole.
- the vibration direction converter 7 includes a first link portion 270 and a second link portion 271 as a link mechanism 7L, one end of the second link portion 271 is supported by the first link portion 270, and the other end is Supported by the bridge 102.
- the bridging portion 102 that supports the second link portion 271 is formed in a flat plate shape, and the connecting portion 104 that connects the other end of the second link portion 271 and the bridging portion 102 forms a single plane. ing.
- the other end of the second link portion 271 is engaged with the bridging portion 102 so that the vibration direction changing portion 7 and the bridging portion 102 are connected.
- a protrusion 104A is formed on the connecting portion 104 of the bridging portion 102, and a connecting portion (sixth link portion) 275 formed integrally with the end of the second link portion 271 via the joint portion 52 is provided on the connecting portion 104.
- a hole 104B into which the protrusion 104A is inserted is formed.
- the protrusion 104 ⁇ / b> A of the connecting portion 104 in the bridging portion 102 is a positioning portion that determines the position of the vibration direction changing portion 7 with respect to the stationary portion 100.
- the protrusion 104A is inserted into the hole 104B of the connecting portion (sixth link portion) 275 formed integrally with the end portion of the second link portion 271 via the joint portion 52, whereby the stationary portion 100 is On the other hand, the vibration direction converter 7 is positioned.
- the second connecting portion (fourth link portion) 273 is a portion integrated with the end portion of the first link portion 270 via the joint portion 270B, and this second connecting portion (fourth link portion). )
- the end portion of the first link portion 270 and the diaphragm 2 are connected by connecting the 273 and the diaphragm 2.
- a concave portion is formed on the surface of the diaphragm 2 facing the second connecting portion (fourth link portion) 273 on the acoustic radiation side, and the diaphragm 2 has rigidity.
- the stationary connection portion (sixth link portion) 275 is a portion integrated with the end portion of the second link portion 271 via the joint portion 271B, and this connection portion (sixth link portion) 275 includes A hole 104B is formed, and the protrusion 104A of the connecting portion 104 is inserted into the hole 104B, and the connecting portion 104 and the end of the second link portion 271 are connected.
- the attachment unit 81 extends in the vibration direction (X-axis direction) of the voice coil 60, and a plurality of arm portions 84 disposed along both side edges of the voice coil 60 and a bridge that connects the arm portions 84. Part 87.
- the arm portion 84 supports the holding portion 8 connected to the voice coil 60, and a flange portion 84 a supported between the first component member 110 and the second component member 120 that becomes the stationary portion 100.
- the arm portion 84 has a flat connecting portion 84 b and a protruding portion 84 c that protrudes from the arm portion 84 toward the stationary portion 100.
- the bridging portion 87 has a shape protruding from the flange portion 84 a toward the first component member 110 or the second component member 120 that becomes the diaphragm 2 or the stationary portion 100, and the voice coil 60 and the bridging portion 87. A prescribed interval is provided between them. Further, a part of the bridging portion 87 facing the voice coil 60 is arranged at a height different from that of the voice coil 60. In the illustrated example, the bridging portion 87 has a shape protruding toward the diaphragm 2 side, but the shape is not limited thereto, and may be a shape protruding toward the stationary portion 100 as necessary.
- a plurality of bridging portions 87 are provided, extend around from one arm portion 84 to the other arm portion 84, bypassing the magnetic pole member of the magnetic circuit 40 (yoke portion 41, magnet 42). Is disposed in the vicinity of both side edges 60E and 60F of the voice coil 60 extending in a direction (Y-axis direction) intersecting with the vibration direction.
- one bridging portion 87A is disposed on one side edge 6c of the voice coil support portion 6 to which the vibration direction changing portion 7 is connected, and the other bridging portion 87B is the other side of the voice coil support portion 6.
- the other bridging portion 87B is formed with a connecting portion 87a with a second holding portion 88B, which will be described later, protruding from the flange portion 84a toward the diaphragm 2 or the stationary portion 100.
- the other side edge 6d of the voice coil support portion 6 on the opposite side to the vibration direction conversion portion side of the voice coil support portion 6 is formed in a concave shape on the voice coil 60 side.
- the voice coil support portion 6 is formed in a planar shape that can prevent the voice coil support portion 6 from vibrating and coming into contact with the mounting unit 81. Specifically, a relatively large gap is formed between an inner side surface 87b of the mounting unit 81 to be described later and the other side edge 6d of the voice coil support portion 6, and both left and right ends of the second holding portion 8 (88B).
- the flat shape protrudes toward the second holding portion 8 (88B) as it moves to the flat portion 88e side.
- the holding portion 8 is formed of, for example, a conductive metal, and is attached in a direction (Y-axis direction) intersecting the vibration direction of the voice coil 60 with the connection unit 82 interposed therebetween, as in the example shown in FIG.
- a pair of first holding portions 88A and a second holding portion 88B integrated in a direction (Y-axis direction) intersecting the vibration direction of the voice coil 60 are provided.
- the first holding portion 88A is connected to the one bridging portion 87A close to the arm portion 84 and the one side edge 60E side of the voice coil 60, in the illustrated example, one side edge 6c of the voice coil support portion 6.
- the second holding portion 88B is continuously formed from one arm portion 84 to the other arm portion 84, and is on the other side edge 60F side of the voice coil 60, in the illustrated example, the other side edge 6d of the voice coil support portion 6.
- the first holding portion 88A includes a flat plate portion (first surface) 88a having a linear cross-sectional shape, a terminal joint surface (second surface) 88b protruding from the flat plate portion 88a, and a flat plate portion.
- a curved portion 88c formed continuously with respect to 88a and having a curved planar shape, and a connection surface (third surface) 88d extending in a direction intersecting with the flat plate portion 88a are provided.
- the flat connecting portion 84b formed on the arm portion 84 of the mounting unit 81 is connected to the flat plate portion 88a of the first holding portion 88A directly or via other members by joining or the like.
- 82 is attached to one side edge 6c of the voice coil support portion 6 by fitting or the like.
- the second holding portion 88B has both ends attached to the other side edge 6d of the voice coil support portion 6 and a central portion attached to the connecting portion 87a of the other bridging portion 87B.
- the other member include an elastic member such as an adhesive resin and a resin member, and a vibration damping member.
- the mounting unit 81, the voice coil support portion 6, and the holding portion 8 are unitized to form the first component member 110 and the second component member 120. So that it can be incorporated in between.
- the second holding portion 88B is disposed within the width of the voice coil support portion 6 so that the holding mechanism of the voice coil support portion 6 is not bulky in the width direction of the voice coil support portion 6.
- the second holding part 88B which is an integral part, and the mounting unit 81 are connected via an adhesive resin.
- the flat plate portions 88e and 88e formed on the left and right ends of the second holding portion 88B are connected to the connection portions 6e and 6e on the left and right ends of the other side edge 6d of the voice coil support portion 6 via connecting parts 6f and 6f, respectively.
- the flat plate portion 88f formed at the center of the second holding portion 88B is connected to the connecting portion 87a of the mounting unit 81.
- the other side edge 6d of the voice coil support portion 6 on the opposite side to the vibration direction conversion portion side of the voice coil support portion 40 is formed in a concave shape on the voice coil 60 side.
- the voice coil support portion 6 is formed in a planar shape that can prevent the voice coil support portion 6 from vibrating and coming into contact with the mounting unit 81. Specifically, a relatively large gap is formed between the connecting portion 87a of the mounting unit 81 and the other side edge 6d of the voice coil support portion 6, and the flat plate portions 88e on the left and right ends of the second holding portion 88B are formed. As it moves to, the planar shape protrudes toward the second holding portion 88B.
- the second holding portion 88B is formed of a continuous member, the second holding portion 88B has a continuous shape even in the central portion, but may be formed of a plurality of members and is not particularly limited.
- a part of the second holding portion 88B is disposed to protrude outward from the stationary portion 100, but is not limited thereto, and may be changed so as to be accommodated inside the stationary portion 100.
- the flat portions 88e at the left and right ends of the second holding portion 88B are formed with holes into which the connection portions 6e at the left and right ends of the other side edge 6d of the voice coil support portion 6 are inserted.
- FIG. 26 is an enlarged perspective view of a main part in a state where the first component member 110 is turned upside down.
- the terminal joint surface (second surface) 88b of the first holding portion 88A is a terminal.
- the connection to the member 91 is shown in detail.
- the connection surface (third surface) 88d of the first holding portion 88A is connected to the terminal portions 60P1 and 60Q1 of the lead wires 60P and 60Q from the end of the voice coil 60. Is shown in detail.
- the terminal joining surface 88b on one end side is connected to the terminal member 91, and the connecting surface 88d on the other end side is connected to the lead wires 60P and 60Q of the voice coil 60 via the terminal portions 60P1 and 60Q1.
- the terminal member 91 electrically connects one end side of the pair of first holding portions 88A to the wiring 92 (external), and an audio signal input from the wiring 92 passes through the terminal member 91 and the first holding portion 88A.
- the terminal member 91 is a rod-shaped conductive member, and has a positioning hole 91A.
- the terminal member 91 By inserting a positioning projection 111 provided on the stationary portion 100 into the positioning hole 91A, the terminal member 91 is placed at a specific location in the stationary portion 100. Positioned. In addition, a part of the terminal member 91 is insulated, and the surface of the conductive member in the region connected to the terminal joint surface 88b of the first holding portion 88A is exposed, and the first holding portion 88A. And can be electrically connected. Further, the terminal member 91 is formed of an insulating member (insulating member) such as a resin member, and a conductive member is provided on the insulating member, so that the terminal joint surface 88b of the first holding portion 88A and the electric member are electrically connected. May be connected.
- insulating member such as a resin member
- the vibration direction converter 7 is connected to the connecting unit 82 attached to the one side edge 6c of the voice coil support 6.
- the vibration direction changing portion 7 an integrated part shown in FIG. 13 is adopted, and the joint portion 200 formed at the end thereof is attached to the connection step portion 82 ⁇ / b> A formed on the side surface of the coupling unit 82.
- the connecting unit 82 and the vibration direction changing unit 7 are detachably connected.
- the connection unit 82 is formed with a through-hole 82B penetrating along the vibration direction of the voice coil 60 as necessary.
- This through hole 82B is a vent hole formed to reduce the air resistance acting on the connecting unit 82 against the vibration of the voice coil support 6.
- the connecting unit 82 connects the first connecting portion 53A of the vibration direction converting portion 7 and the end of the voice coil supporting portion 6 with a space therebetween, and thereby within the height of the vibration direction converting portion 7. The height of the magnetic circuit 40 is adjusted.
- the vibration direction conversion unit 7 is, for example, an adhesive or a double-sided tape as a bonding member with respect to the vibration plate 2 or the voice coil 60 or the attached member 300 including other members than the vibration plate 2 and the voice coil 60.
- the joint portion 270 ⁇ / b> B is arranged so as to be close to the attached member 300, and is connected by a connecting member such as a screw as a fastening member.
- a contact avoiding portion 310 that avoids contact with the joint portions 270A, 270B, 274B, etc. is formed on the surface side of the attached member 300 close to the joint portions 270A, 270B, 274B, etc. of the vibration direction conversion portion 7.
- the contact avoiding portion 310 also functions as a joining member restraining portion that restrains the joining member that joins the vibration direction changing portion 7 and the attached member 300.
- the contact avoiding portion 310 is formed in a concave shape along the joint portions 270A, 270B, 274B, and the like, for example, a concave portion, a notch portion, a groove portion, etc., and the joint portions 270A, 270B, 274B, etc. , 274B and the like, a predetermined space is formed between the surface of the attached member 300 and the joint member 270A. 270B, 274B, etc. are restrained. In the example shown in FIG.
- a concave portion is formed as a contact avoiding portion 310 in the joint portion 200 of the vibration direction changing portion 7 to be the attached member 300 so as to be close to the joint portion 270 ⁇ / b> A
- the concave portion is formed so as to be close to the joint portion 270B
- the concave portion is formed as the contact avoiding portion 310 in the fourth link portion 273 so as to be close to the joint portion 274B.
- the voice coils 60 and 60 In order to input voice signals to the voice coils 60 and 60 corresponding to the plurality of driving units 14, the voice coils 60 and 60 extend from one voice coil 60 to the other voice coil 60, and A pair of terminal members 91, 91 common to the voice coils 60, 60 are provided on the stationary part 100. Further, the terminal members 91, 91 are provided inside the opening portion (not shown) formed between the first component member 110 and the second component member 120 that constitute the frame 3 that is the stationary portion 100. , 91 are arranged. For this reason, compared with the case where the terminal portions are provided at one end and the other end of each voice coil 60, the arrangement of the terminal portions can be saved, and the speaker device can be made smaller or thinner.
- the terminal members 91 and 91 can be stably fixed to the stationary part 100, and poor connection with the voice coils 60 and 60 can be avoided.
- the terminal members 91 and 91 are formed in a shape having a long axis extending from one voice coil 60 to the other voice coil 60 and a short axis intersecting with the long axis. Thus, by making it elongate shape, the efficiency of installation space can be improved.
- the terminal members 91 and 91 are formed with connection portions 91a connected to the wirings 92 and 92 (second wiring) electrically connected to the outside, and are electrically connected to the terminal members 91 and 91 through the connection portions 91a.
- the wiring 92 (second wiring) is fixed to the side surface of the stationary part 100 and is connected to the terminal members 91 and 91.
- the outer peripheral frame portion 101 of the stationary portion 100 includes a side surface to which the wiring 92 is attached.
- Guide portions 106 and 106 for guiding the wiring 92 are formed on the side surface of the stationary portion 100.
- a conductive layer 32 connected to the voice coil lead wire 31 led out from the end of the voice coil 60 is formed on the voice coil support portion 6 (base) that supports the voice coil 60.
- the conductive layer 32 is patterned on the voice coil support 6 (base) so as to surround the conductive member of the voice coil 60, and the conductive layer 32 electrically connects the conductive member of the voice coil 60 and the holding unit 15. is doing.
- Wiring for electrically connecting the voice coil 60 and the terminal member 91 is formed in the holding portion 15, and the ends of the terminal members 91 and 91 are electrically connected to the wiring of the holding portion 15. And the voice coil lead wire are connected, and the wiring 92 is connected to the terminal members 91, 91, whereby a voice signal is input to the voice coil 60 from the outside.
- connection part F1 connected to the terminal members 91 and 91 is formed in the holding part 15.
- the connecting portion F1 extends in a direction intersecting the vibration direction (X-axis direction) of the diaphragm 2 and is formed in a flat plate shape so as to contact the terminal portions 81 and 81.
- the holding portion 15 is also formed with a connection portion F ⁇ b> 2 that connects to the conductive layer 32, extends in a direction intersecting the vibration direction (Z-axis direction) of the diaphragm 2, and extends to the end of the conductive layer 32. It forms in flat form so that it may contact
- FIG. 27 is an explanatory view showing an assembly process of the entire speaker device.
- the first constituent member 110 and the second constituent member 120 one is formed with a convex portion 100m protruding toward the mounting unit 81, and the other is formed with a concave portion 100n into which the convex portion 100m is inserted,
- holes 89 through which the convex portion 100m passes are formed.
- a plurality of convex portions 100m are formed on the inner surface side of the first component member 110, and a hole portion 89 is opened in the flange portion 84a of the arm portion 84 so as to face these convex portions 100m.
- a recess 100 n is formed on the inner surface side of the second component member 120.
- a through hole may be formed instead of the recess 100n.
- the joint 200 of the vibration direction converter 7 is inserted into the connecting unit 82, so that the vibration direction converter 7, the already-unitized mounting unit 81, and voice
- the coil support unit 6 and the holding unit 8 (the first holding unit 88A and the second holding unit 88B) are integrated, and the hole 89 of the mounting unit 81 is formed in the first component member 110 or the second component member 120.
- the pair of magnetic pole members (yoke portion 41, magnet 42) of the magnetic circuit 40 are positioned with respect to the stationary portion 100 so as to sandwich the voice coil 60 by fitting with the convex portion 100m, and the first configuration The member 110 and the second component member 120 are sandwiched.
- the immovable sixth link portion 275 of the vibration direction changing portion 7 is fitted to the support 120B formed on the bottom portion 120A of the second component member 120 and is supported so as not to move.
- Other parts are also arranged at predetermined positions with respect to the first component member 110 and the second component member 120. Further, by inserting the convex portions 100 m included in the first component member 110 of the stationary portion 100 into connection hole portions 89 provided at the four corners of the attachment unit 81, the stationary portion 100 is fixed at a predetermined position with respect to the stationary portion 100. .
- one magnetic pole member (yoke portion 41, magnet 42) of the magnetic circuit 40 is incorporated into the inner surface of the first component member 110, and then the mounting unit 81, the vibration direction converting portion 7 and the like are installed.
- the components are sequentially assembled and positioned, and then the second component member 120 is overlapped to sandwich each component, and the other magnetic pole member (yoke portion 41, magnet 42) of the magnetic circuit 40 is incorporated. Accordingly, the protrusion 100m formed on the first component 110 is inserted into the hole 89 of the attachment unit 81 and the recess 100n of the second component 120, thereby supporting the attachment unit 81 and the voice coil.
- the portion 6 and the holding portion 8 (the first holding portion 88A and the second holding portion 88B) are fixed between the first component member 110 and the second component member 120.
- the fourth link portion 273 of the vibration direction converting portion 7 and the diaphragm 2 are joined with an adhesive as a joining member, and the outer peripheral portion of the diaphragm 2 is configured to be the first configuration via the edge 5. It is attached to the edge of the central opening of the member 110.
- the assembly process may be as follows. First, the wiring 92 is connected to the terminal members 91, 91 (connection step between the connection terminal portion and the wiring). Next, the magnet 42 is joined to the yoke part 41 (an assembly process of a magnetic circuit). Next, the terminal members 91 and 91 to which the wiring 92 is connected are attached to the outer peripheral frame portion 101A of the first component member 110 (attachment step of stationary portion and connection terminal portion). Next, the pair of attachment units 81 to which the above-described voice coil 60 is attached is attached to the first component member 110 (attachment step of the stationary part and the attachment unit).
- the terminal members 91, 91 and the holding portion 15A attached to the attachment unit 81 are electrically connected using solder or the like (connection step between the connection terminal portion and the holding portion).
- the connecting part 104 is attached to the voice coil 60 (attachment process of the voice coil and the connecting part).
- the vibration direction conversion part 7 is attached to the connection part 104 (connection process of a vibration direction conversion part and a connection part).
- the immovable sixth link portion 275 of the vibration direction changing portion 7 is attached to the support 120B formed on the bottom 120A of the second component 120 (attachment of the vibration direction changing portion and the second component). Process).
- the 2nd component member 120 is arrange
- the magnetic pole member (yoke part) 41 which joined the magnet 42 to the outer periphery frame part 101A of the 2nd structural member 120 is attached (attachment process of a stationary part and a magnetic circuit).
- the diaphragm 2 and the edge 5 (vibrating body) are attached to the second outer peripheral frame portion 101B of the first constituent member 110 (attachment step of stationary portion and vibrating body).
- the vibrating body and the vibration direction changing portion are joined (attachment step of the vibrating body and the vibration direction changing portion).
- the magnet 42 is joined to the first outer peripheral frame portion 101A of the first component member 100.
- a magnetic pole member (yoke part) 41 is attached (attachment process of stationary part and magnetic circuit).
- the wiring 92 is attached to the guide portion 106 provided in the first outer peripheral frame portion 101A of the first component member 110 (an attachment process between the stationary portion and the wiring). In addition, you may change the order of the above-mentioned process as needed.
- the frame 3 serving as the stationary part 100 includes the first frame 110 serving as the first component and the second frame 120 serving as the second component, and the first frame 110 is the acoustic of the speaker device 1W. It arrange
- frame 120 is arrange
- the drive unit 14 of the speaker device 1 is supported so as to be sandwiched between the first frame 110 and the second frame 120.
- the outer peripheral frame portion 101 formed in an annular shape included in the first frame 110 supports one side (41B) of the magnetic pole member (yoke portion) 41 of the magnetic circuit 40.
- the second frame 120 includes an outer peripheral frame portion 101 and a bridging portion 102 and supports one side (41A) of the magnetic pole member (yoke portion) 41 of the magnetic circuit 40.
- the first frame 110 and the second frame 120 include a concave receiving portion 105 that accommodates a part of the yoke portion 41.
- a protrusion 41p of the yoke portion 41 is fitted into the receiving portion 105, and the yoke portion 41 is positioned in order to form an appropriate magnetic gap.
- An opening 101 ⁇ / b> S is formed between the outer peripheral frame portion 101 and the bridging portion 102 in the second frame 120.
- the outer peripheral frame portion 101 is formed with a fourth protrusion (not shown) along the outer peripheral edge of the opening 101S. The fourth protrusion increases the torsional rigidity of the outer peripheral frame portion 101.
- an excessive vibration suppression unit 108 for suppressing excessive vibration of the voice coil 60 is formed in the first frame 110.
- the excessive vibration suppression unit 108 protrudes in the movable region of the voice coil 30, particularly in a notch formed at the edge along the vibration direction of the voice coil 30, and the voice coil support unit 6 hits the voice coil support unit 6. Excessive vibration of the coil 60 is suppressed.
- the magnetic circuit 40 is attached to the first frame 110 and the second frame 120 with the magnetic pole member 22 joined to the magnet.
- the magnetic pole member 22 includes a plurality of protrusions 41 p, and the protrusions 41 p are supported by the receiving portion 105.
- the yoke portion 41 which is a plate-like magnetic body, has a width that decreases from the vibration direction changing portion 7 to the stationary portion 100, thereby preventing the holding portion 15 from contacting the yoke portion 41. .
- the yoke portions 41A and 41B are attached to the first frame 110 and the second frame 120, and the first frame 110 and the second frame 120 are coupled to each other so that the yoke portions 41A and 41B or the magnet 42 is connected. Is provided with a gap as a magnetic gap 20G.
- the speaker device 1W can accurately position the holding unit 8, the magnetic circuit 40, or the stationary unit 100 with respect to the voice coil 60 by using the mounting unit 81.
- the mounting unit 81 by using the mounting unit 81, a plurality of parts can be blocked, work efficiency can be improved, manufacturing inspection can be easily performed, and a defect rate can be reduced.
- the voice coil 60 and the holding unit 8 can be removed or replaced as a set by using the mounting unit 81.
- a gap is formed between the first component member 110 and one magnetic pole member (yoke portion 41) of the magnetic circuit 40 disposed in the vicinity of the first component member 110.
- the vibration of the diaphragm 2 is prevented from propagating to the magnetic circuit 40 via the one magnetic pole member (yoke portion 41) and inducing contact between the magnetic circuit 40 and the voice coil 60.
- the height of the magnetic circuit 40 is almost the entire height of the entire apparatus, and the voice coil support portion 6 vibrates in the vicinity of the center of the magnetic circuit 40. And the end of the vibration direction converter 7 are connected to each other at different heights via a connecting unit 82. As a result, each link portion of the vibration direction conversion unit 7 can ensure a sufficient length within the height of the apparatus, and a part of the height of the magnetic circuit 40 is set to the height of the vibration direction conversion unit 7. It is possible to fit in.
- the speaker device according to the embodiment of the present invention can be reduced in thickness and can be increased in volume.
- a thin speaker device capable of emitting a large volume of reproduced sound with a relatively simple structure can be obtained by vibrating the diaphragm in a direction different from the vibration direction of the voice coil.
- the joint portion of the link mechanism needs to be durable enough to withstand the high-speed repeated vibration required for the speaker device.
- the joint portion of the link mechanism can have durability and flexibility.
- the link mechanism itself needs to be lightweight. Furthermore, there may be a need for ease of work when such a link mechanism is incorporated into the speaker device and ease of manufacture when the link mechanism itself is manufactured. With the configuration of the speaker device described above, weight reduction and manufacturability are possible.
- FIG. 28 is an explanatory diagram showing an electronic apparatus including the speaker device according to the embodiment of the present invention.
- An electronic device 1000 such as a mobile phone or a portable information terminal shown in FIG. 5A or an electronic device 2000 such as a flat panel display shown in FIG.
- the speaker device 1 is housed in the housing or the speaker device 1 is attached to the side surface of the housing as a mounted member of the electronic device 2000, the thickness space necessary for installing the speaker device 1 can be reduced. The entire device can be thinned. In addition, sufficient audio output can be obtained even in a thin electronic device.
- FIG. 29 is an explanatory view showing an automobile provided with a speaker according to an embodiment of the present invention.
- the interior space can be expanded by making the speaker device 1 thinner.
- the speaker device 1 according to the embodiment of the present invention is attached to a door panel or ceiling as a member to be attached, the protrusion of the door panel or ceiling can be made relatively small, and the driver's operation space can be expanded and the indoor space can be expanded. It becomes possible to do.
- sufficient sound output can be obtained, music and radio broadcasting can be enjoyed comfortably in the car even during high-speed driving with a lot of noise.
- the speaker device 1 Even in such a case, by using the speaker device 1, 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 the speaker apparatus 1, the ceiling, wall, etc. (attachment member) in a living room are mentioned, for example.
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Abstract
Description
[請求項1]振動板と、前記振動板を振動自在に支持する静止部と、該静止部に設けられ、音声信号によって前記振動板に振動を与える駆動部とを備え、前記駆動部は、音声信号が入力されて前記振動板とは異なる方向に振動する平板状のボイスコイルと、前記ボイスコイルが配置される磁気ギャップを有する磁気回路と、前記ボイスコイルの振動を前記振動板に伝える剛性の振動方向変換部と、前記ボイスコイルが直線的に振動するように該ボイスコイルを前記静止部に保持する保持部とを備え、前記静止部に設けた音声信号入力端子に入力された音声信号が前記保持部を介して前記ボイスコイルに入力されることを特徴とするスピーカ装置。
また、フレーム3は、ボイスコイル60又はボイスコイル支持部6に対し静止している状態にて配置されている静止部100でもある。なお、ここでいう静止部100は、完全に静止している状態を意図するものではなく、例えば、振動板2を支持できる程度に静止していればよい。この静止部100には、スピーカ装置1を駆動する際に生じる振動が伝搬し、振動が静止部100全体に生じていても構わない。また、静止部100は後述する磁気回路40を機械的に一体となって配置されていればよく、フレーム3は磁気回路40に支持されているとも言えるので、フレーム3は静止部100になり、また、磁気回路40自体又は磁気回路40の構成部材、或いは磁気回路40にて支持されている部材が静止部100に成りうる。
また、リンク部分を複数の板状部材で形成することもできるが、1つの板部材で形成することで製造工程を簡略化することができる。リンク部分を1つの板状部材で形成する際、1つの平板状の板状部材からリンク部分を切り出しても構わない。
図15~図17は、本発明の実施例を示した説明図(振動板を省略した状態の平面図)である(前述した実施形態と同一箇所は同一符号を付して重複説明を省略する)。図15に示す例は、図7に示した保持部8の保持機構を採用している。静止部100となるフレーム3は振動板(図示省略)を囲い且つ磁気回路40を支持できる必要最小限の大きさの枠になっている。保持部8の両端に接続部8A,8Bが設けられ、接続部8Bがフレーム3の内面に取り付けられ、接続部8Aがボイスコイル支持部6に取り付けられている。ボイスコイル支持部6に支持されたボイスコイル60からの引き出し線は、接続部8Aから保持部8,接続部8Bを介してフレーム3の外側から接続される入力信号線(図示省略)に接続されている。図16に示す例は、図8に示した保持部8の保持機構を採用している以外は図15に示す例と同様のものである。一体保持部80がボイスコイル支持部6の一辺6aに取り付けられ、この一体保持部80の両端に設けられる接続部8A,8Aがフレーム3に取り付けられている。図17に示す例では、図9に示した保持機構を採用しており、取り付けユニット81を介してボイスコイル支持部6がフレーム3に接続されており、連結ユニット82を介してボイスコイル支持部6と振動方向変換部7とが連結されている。取り付けユニット81は左右の駆動部を一体に支持しており、フレーム3に一体に取り付け可能になっている。図15~図17に示した例では、リンク部分70又は72に通気孔70P又は72Pが形成されており、リンク部分70又は72がボイスコイル支持部6の振動によって角度変換するときの空気抵抗を低減するようになっている。
Claims (51)
- 振動板と、前記振動板を振動自在に支持する静止部と、該静止部に設けられ、音声信号によって前記振動板に振動を与える駆動部とを備え、
前記駆動部は、
音声信号が入力されて前記振動板とは異なる方向に振動する平板状のボイスコイルと、
前記ボイスコイルが配置される磁気ギャップを有する磁気回路と、
前記ボイスコイルの振動を前記振動板に伝える剛性の振動方向変換部と、
前記ボイスコイルが直線的に振動するように該ボイスコイルを前記静止部に保持する保持部とを備え、
前記静止部に設けた音声信号入力端子に入力された音声信号が前記保持部を介して前記ボイスコイルに入力されることを特徴とするスピーカ装置。 - 前記保持部は、導電性金属で形成され、前記ボイスコイルの端部又は該端部からの引き出し線と電気的に接続され、前記静止部側の端部で前記音声信号入力端子と電気的に接続されていることを特徴とする請求項1に記載のスピーカ装置。
- 前記保持部は、前記ボイスコイルの振動方向に沿った一方向の変形を許容して他の方向への変形を規制した湾曲板状部材であることを特徴とする請求項2に記載のスピーカ装置。
- 前記保持部は、前記ボイスコイルを略左右対称に保持していることを特徴とする請求項3に記載のスピーカ装置。
- 左右の前記保持部が一体化されて前記ボイスコイル支持部端縁の一辺を保持していることを特徴とする請求項4に記載のスピーカ装置。
- 前記保持部の接続端部には凹部が形成され、
前記ボイスコイルの端縁の一部が前記凹部に挿入されていることを特徴とする請求項4記載のスピーカ装置。 - 前記ボイスコイルと前記振動方向変換部とを連結する連結ユニットが設けられ、
前記保持部は、前記連結ユニットを介して、前記ボイスコイルを保持しており、
前記連結ユニットは一対の前記保持部の間に設けられ、
前記ボイスコイルの振動方向一端縁が前記連結ユニットに取り付けられていることを特徴とする請求項4記載のスピーカ装置。 - 前記ボイスコイルの振動方向に沿った両側縁と前記ボイスコイルの振動方向他端縁とを囲むように配置される取り付けユニットが設けられ、
該取り付けユニットの前記ボイスコイルの振動方向に沿った両側縁の外側に位置する接続部に前記保持部の端部が取り付けられ、
該取り付けユニットの前記ボイスコイルの振動方向他端縁の外側に位置する取り付け端部に左右の前記保持部を一体化した一体保持部の中央部を支持し、
前記取り付けユニットを介して前記ボイスコイル支持部を前記フレームに取り付けることを特徴とする請求項4記載のスピーカ装置。 - 前記取り付け端部の内側側面には、前記一体保持部に向かって凸状の支持部が形成され、前記一体保持部の中央には当該支持部に支持される被支持部が形成されていることを特徴とする請求項8記載のスピーカ装置。
- 前記ボイスコイルにおける前記振動方向他端縁の両側端に前記一体保持部に向かって凸状の支持部が形成され、前記一体保持部の両側端部には当該凸状の支持部に支持される被支持部が形成されていることを特徴とする請求項9記載のスピーカ装置。
- 前記静止部としてフレームが設けられ、
前記振動方向変換部は、前記ボイスコイルと前記振動板との間に形成されたリンク部分を角度変換させるリンク機構を備えることを特徴とする請求項1のスピーカ装置。 - 前記静止部としてフレームを設け、該フレームは平面状の底面を有し、前記振動板は前記フレームの底面に沿って平面的に支持され、前記磁気ギャップは前記フレームの底面に沿って形成され、前記振動方向変換部は前記フレームの底面からの反力により当該底面と交差する方向に前記振動板を振動させることを特徴とする請求項1に記載のスピーカ装置。
- 前記磁気回路は、互いに逆方向の磁場が形成される一対の磁気ギャップを有し、
前記ボイスコイルは、平面状に形成されて、前記一対の磁気ギャップで逆方向に電流が流れるように環状に形成されることを特徴とする請求項1に記載のスピーカ装置。 - 前記駆動部を一対設け、前記振動方向変換部を互いに略左右対称に対向配置したことを特徴とする請求項1に記載のスピーカ装置。
- 前記静止部は、前記フレーム上に設けられる支持部であることを特徴とする請求項11に記載のスピーカ装置。
- 前記静止部は、前記駆動部を構成するヨーク部、又は前記ヨーク部上に設けられる支持部であることを特徴とする請求項1記載のスピーカ装置。
- 前記静止部としてフレームを設け、該フレームは、前記磁気回路を形成するヨーク部であることを特徴とする請求項1記載のスピーカ装置。
- 前記ヨーク部は平面状の底面を有し、前記振動板は前記ヨーク部の底面に沿って平面的に支持され、前記磁気ギャップは前記ヨーク部の底面に沿って形成され、前記振動方向変換部は前記ヨーク部の底面からの反力により当該底面と交差する方向に前記振動板を振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。
- 前記ボイスコイルを、前記保持部を介して前記静止部に対し保持する取り付けユニットを備え、
前記取り付けユニットは、前記ボイスコイルを前記静止部に対して規定の位置に配置することを特徴とする請求項1に記載のスピーカ装置。 - 前記取り付けユニットは、前記ボイスコイルの振動方向に延在する、当該ボイスコイルの両側縁に沿って配置される複数の腕部と、前記腕部との間を連結する架橋部とを備え、
前記腕部は、前記ボイスコイルに連結される前記保持部を支持していることを特徴とする請求項19に記載のスピーカ装置。 - 前記磁気回路は、前記ボイスコイルの近傍に配置される磁極部材を備え、
前記架橋部は、前記磁極部材を迂回して、前記一方の腕部から前記他方の腕部へ延び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。 - 前記架橋部を複数備え、
前記架橋部は、前記ボイスコイルの振動方向に対し交差する方向に延在する、当該ボイスコイルの両側縁の近傍に配置されていることを特徴とする請求項21に記載のスピーカ装置。 - 前記保持部を複数備え、
前記一方の保持部は、前記腕部及び前記ボイスコイルに連結され、
前記複数の架橋部のうち、一方の架橋部を、前記振動方向変換部が連結される前記ボイスコイルの一方の側縁側に配置し、
他方の側縁側に配置される前記他方の架橋部及び前記ボイスコイルに、前記他方の保持部が連結されること
を特徴とする請求項22に記載のスピーカ装置。 - 前記腕部は、前記静止部に支持されるフランジ部を備えることを特徴とする請求項23に記載のスピーカ装置。
- 前記架橋部は、前記フランジ部から前記振動板又は前記静止部に向かって突出した形状を有し、
前記ボイスコイルと対向する前記架橋部との間には、規定間隔が設けられていることを特徴とする請求項24に記載のスピーカ装置。 - 前記腕部に形成される、前記一方の保持部との連結部は、前記フランジ部から前記振動板又は前記静止部に向かって突出する形状に形成されていることを特徴とする請求項25に記載のスピーカ装置。
- 前記他方の架橋部に形成される、前記他方の保持部との連結部は、前記フランジ部から前記振動板又は前記静止部に向かって突出する形状に形成されていることを特徴とする請求項25に記載のスピーカ装置。
- 前記静止部は、前記振動板側に配置される第1の構成部材と、前記第1の構成部材と対向して配置される第2の構成部材とで形成されており、
前記第1の構成部材又は前記第2の構成部材に、前記取り付けユニットが取り付けられることを特徴とする請求項20に記載のスピーカ装置。 - 前記第1の構成部材と前記第2の構成部材との間には、外部と前記ボイスコイルとを電気的に接続する端子部材が配置されており、
前記腕部に形成される、前記一方の保持部との連結部は、当該腕部から前記静止部に向かって突出する突出部を備え、
前記突出部は、前記端子部材に取り付けられていることを特徴とする請求項28に記載のスピーカ装置。 - 前記一方の架橋部の側に配置される前記一方の保持部には、前記ボイスコイルに外部から入力される音声信号を入力するための配線が形成されており、
前記配線と前記端子部材は、前記腕部が有する前記一方の保持部との前記連結部の突出部の近傍にて、電気的に接続されていることを特徴とする請求項29に記載のスピーカ装置。 - 前記一方の架橋部の側に配置される前記一方の保持部と前記端子部材とが、前記腕部が有する前記連結部の突出部の近傍にて接合することで、
前記配線と前記端子部材とが電気的に接続されることを特徴とする請求項30に記載のスピーカ装置。 - 前記一方の架橋部の側に配置される前記一方の保持部は、前記腕部が有する前記連結部に接合される第1の面と、当該第1の面から突出して、前記端子部材と接合する第2の面とを備えることを特徴とする請求項31に記載のスピーカ装置。
- 前記取り付けユニットは、前記第1の構成部材又は前記第2の構成部材に嵌合することで、前記静止部に対して位置決めされることを特徴とする請求項28に記載のスピーカ装置。
- 前記第1の構成部材と前記第2の構成部材のうち、一方には前記取り付けユニットに向かって突出する凸部と、
他方には前記凸部が挿入される凹部が形成されており、
前記取り付けユニットには前記凸部が通過する孔部が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。 - 前記他方の架橋部の側には、前記一方の腕部から前記他方の腕部にかけて連続的に形成された前記他方の保持部が配置されており、
前記連続的に形成された他方の保持部は、当該保持部が有する両端部の間にて、その一部が前記他方の架橋部の連結部に取り付けられることを特徴とする請求項27に記載のスピーカ装置。 - 前記一方の保持部には、外部から入力される音声信号を前記ボイスコイルに入力する前記配線の一部が形成されており、
前記一方の保持部は、湾曲した平面形状を有する湾曲部と、
当該湾曲部に対して連続的に形成され、直線状の断面形状を有する平板部とを備え、
前記一方の保持部は、前記平板部を第1の面として、前記第1の面から突出するとともに、当該第1の面に対して交差する方向に延在する第3の面を有し、
前記第3の面は、前記ボイスコイル側の端部の近傍に形成されて、前記ボイスコイルと電気的に接続されていることを特徴とする請求項1に記載のスピーカ装置。 - 前記振動方向変換部は、一端部が前記ボイスコイルに角度変更自在に直接又は他の部材を介して連結されるとともに、他端部が前記振動板に角度変更自在に直接又は他の部材を介して連結され、
前記振動板の振動方向及び前記ボイスコイルの振動方向それぞれに対して斜設された剛性のリンク部分を備えることを特徴とする請求項1に記載のスピーカ装置。 - 前記振動方向変換部における前記ボイスコイル側の端部と前記ボイスコイルの前記振動方向変換部側の端部との間に両端部の位置を前記振動方向に沿って異ならせて連結する連結部を備えることを特徴とする請求項1に記載のスピーカ装置。
- 前記振動方向変換部は、前記振動板及び前記ボイスコイルを含む被取付部材と連結しているとともに、該被取付部材に近接する関節部分を備え、
前記関節部分に近接する前記被取付部材の面側には、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1に記載のスピーカ装置。 - 前記振動方向変換部は、前記振動板および前記ボイスコイルを含む被取付部材と連結しているとともに、該被取付部材に近接する関節部分を備え、
前記関節部分と対向する前記被取付部材の面側には、前記振動方向変換部と前記被取付部材とを接合する接着部材の収容部が形成されていることを特徴とする請求項1に記載のスピーカ装置。 - 前記振動方向変換部は、前記ボイスコイルと前記振動板との間で角度変更自在に斜設される剛性のリンク部分と、該リンク部分の両端に形成される関節部分とを備え、
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1に記載のスピーカ装置。 - 前記ボイスコイルは、平面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1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42に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、前記ボイスコイルの振動方向に振動自在に保持する第1の保持部を備えることを特徴とする請求項1に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、当該ボイスコイルの振動方向に振動自在に保持する第2の保持部を備えることを特徴とする請求項44に記載のスピーカ装置。
- 前記振動方向変換部における前記ボイスコイル側の端部と前記ボイスコイルの前記振動方向変換部側の端部との間に両端部の位置を前記振動方向に沿って異ならせて連結する連結部を備え、
前記連結部と前記静止部との間において、前記第1の保持部は該連結部の左右に配置され、
前記第2の保持部は、前記第1の保持部に対して前記静止部側で、前記ボイスコイルに対して左右に配置され、
前記第1の保持部及び前記第2の保持部は前記ボイスコイルを略左右対称に前記静止部に直接又は他の部材を介して保持することを特徴とする請求項45に記載のスピーカ装置。 - 前記第2の保持部は、中央部が直接又は他の部材を介して前記静止部に保持され、その両端が前記ボイスコイルの左右端に接続されていることを特徴とする請求項46記載のスピーカ装置。
- 前記第1の保持部及び前記第2の保持部は、取り付けユニットを介して前記連結部及び前記ボイスコイルを前記静止部に保持することを特徴とする請求項46に記載のスピーカ装置。
- 請求項1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1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1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。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/125,211 US20110200204A1 (en) | 2008-10-23 | 2009-07-09 | Speaker device |
JP2010534737A JPWO2010047157A1 (ja) | 2008-10-23 | 2009-07-09 | スピーカ装置 |
CN2009801423462A CN102204277A (zh) | 2008-10-23 | 2009-07-09 | 扬声器装置 |
BRPI0920589A BRPI0920589A2 (pt) | 2008-10-23 | 2009-07-09 | dispositivo de alto-falante |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2008/069269 WO2010046988A1 (ja) | 2008-10-23 | 2008-10-23 | スピーカ装置 |
JPPCT/JP2008/069269 | 2008-10-23 |
Publications (1)
Publication Number | Publication Date |
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WO2010047157A1 true WO2010047157A1 (ja) | 2010-04-29 |
Family
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/069269 WO2010046988A1 (ja) | 2008-10-23 | 2008-10-23 | スピーカ装置 |
PCT/JP2009/062480 WO2010047157A1 (ja) | 2008-10-23 | 2009-07-09 | スピーカ装置 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/JP2008/069269 WO2010046988A1 (ja) | 2008-10-23 | 2008-10-23 | スピーカ装置 |
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US (1) | US20110200204A1 (ja) |
JP (1) | JPWO2010047157A1 (ja) |
CN (1) | CN102204277A (ja) |
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WO (2) | WO2010046988A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9532145B2 (en) | 2010-12-23 | 2016-12-27 | Eagle Acoustics Manufacturing, Llc | Low-profile speaker |
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JP4948001B2 (ja) * | 2005-03-09 | 2012-06-06 | 古河電気工業株式会社 | 平面スピーカ用振動板 |
WO2010097930A1 (ja) * | 2009-02-26 | 2010-09-02 | パイオニア株式会社 | スピーカ装置用ボイスコイル、スピーカ装置 |
BRPI0924402A2 (pt) * | 2009-03-19 | 2016-01-26 | Pioneer Corp | dispositivo alto-falante |
JPWO2011004479A1 (ja) * | 2009-07-09 | 2012-12-13 | パイオニア株式会社 | スピーカ装置 |
WO2011004478A1 (ja) * | 2009-07-09 | 2011-01-13 | パイオニア株式会社 | スピーカ装置 |
CN102113347A (zh) * | 2009-07-29 | 2011-06-29 | 日本先锋公司 | 扬声器装置 |
JPWO2011046030A1 (ja) * | 2009-10-15 | 2013-03-07 | パイオニア株式会社 | スピーカ装置 |
US20110286619A1 (en) * | 2010-05-18 | 2011-11-24 | George E. Short Iii | Ribbon transducer with improved distortion characteristics |
CN108873372B (zh) | 2018-08-24 | 2024-06-14 | 深圳市韶音科技有限公司 | 一种铰链及眼镜 |
US11558698B2 (en) | 2014-01-06 | 2023-01-17 | Shenzhen Shokz Co., Ltd. | Systems and methods for suppressing sound leakage |
US11582565B2 (en) | 2014-01-06 | 2023-02-14 | Shenzhen Shokz Co., Ltd. | Systems and methods for suppressing sound leakage |
US9723409B2 (en) | 2015-07-09 | 2017-08-01 | Honda Motor Co., Ltd. | Vehicle audio system |
CN207340149U (zh) * | 2016-04-01 | 2018-05-08 | 宁波升亚电子有限公司 | 全方位发声式音箱 |
CN206136268U (zh) * | 2016-06-15 | 2017-04-26 | 瑞声声学科技(深圳)有限公司 | 微型发声器件 |
KR102691540B1 (ko) | 2016-11-04 | 2024-08-05 | 삼성전자주식회사 | 평면형 마그넷 스피커 |
CN107027076B (zh) * | 2017-05-15 | 2023-10-27 | 歌尔科技有限公司 | 投射状态可调的智能音箱 |
JP7437002B2 (ja) | 2018-07-09 | 2024-02-22 | アスク インダストリーズ ソシエイタ´ パー アゾーニ | 音響パネルアセンブリ |
JP7208401B2 (ja) | 2018-08-24 | 2023-01-18 | シェンツェン・ショックス・カンパニー・リミテッド | 眼鏡 |
CN111726713A (zh) * | 2019-03-22 | 2020-09-29 | 苏州三色峰电子有限公司 | 一种受话器 |
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BRPI0924402A2 (pt) * | 2009-03-19 | 2016-01-26 | Pioneer Corp | dispositivo alto-falante |
JPWO2011004479A1 (ja) * | 2009-07-09 | 2012-12-13 | パイオニア株式会社 | スピーカ装置 |
JPWO2011004477A1 (ja) * | 2009-07-09 | 2012-12-13 | パイオニア株式会社 | スピーカ装置 |
CN102113347A (zh) * | 2009-07-29 | 2011-06-29 | 日本先锋公司 | 扬声器装置 |
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2008
- 2008-10-23 WO PCT/JP2008/069269 patent/WO2010046988A1/ja active Application Filing
-
2009
- 2009-07-09 BR BRPI0920589A patent/BRPI0920589A2/pt not_active IP Right Cessation
- 2009-07-09 US US13/125,211 patent/US20110200204A1/en not_active Abandoned
- 2009-07-09 CN CN2009801423462A patent/CN102204277A/zh active Pending
- 2009-07-09 WO PCT/JP2009/062480 patent/WO2010047157A1/ja active Application Filing
- 2009-07-09 JP JP2010534737A patent/JPWO2010047157A1/ja active Pending
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JPS574068U (ja) * | 1980-06-10 | 1982-01-09 | ||
JPS63250995A (ja) * | 1987-04-07 | 1988-10-18 | Citizen Watch Co Ltd | 薄型スピ−カ |
JP2003299188A (ja) * | 2002-03-29 | 2003-10-17 | Minebea Co Ltd | スピーカ用ダンパー及びスピーカ |
JP2005159409A (ja) * | 2003-11-20 | 2005-06-16 | Minebea Co Ltd | スピーカ用振動板およびこの振動板を使用したスピーカ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9532145B2 (en) | 2010-12-23 | 2016-12-27 | Eagle Acoustics Manufacturing, Llc | Low-profile speaker |
Also Published As
Publication number | Publication date |
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US20110200204A1 (en) | 2011-08-18 |
WO2010046988A1 (ja) | 2010-04-29 |
CN102204277A (zh) | 2011-09-28 |
JPWO2010047157A1 (ja) | 2012-03-22 |
BRPI0920589A2 (pt) | 2019-09-24 |
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