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WO2011004481A1 - Dispositif haut-parleur - Google Patents

Dispositif haut-parleur Download PDF

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Publication number
WO2011004481A1
WO2011004481A1 PCT/JP2009/062484 JP2009062484W WO2011004481A1 WO 2011004481 A1 WO2011004481 A1 WO 2011004481A1 JP 2009062484 W JP2009062484 W JP 2009062484W WO 2011004481 A1 WO2011004481 A1 WO 2011004481A1
Authority
WO
WIPO (PCT)
Prior art keywords
voice coil
speaker device
vibration direction
diaphragm
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2009/062484
Other languages
English (en)
Japanese (ja)
Inventor
実 堀米
博之 小林
孝治 前川
豊 森山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tohoku Pioneer Corp
Pioneer Corp
Original Assignee
Tohoku Pioneer Corp
Pioneer Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tohoku Pioneer Corp, Pioneer Corp filed Critical Tohoku Pioneer Corp
Priority to PCT/JP2009/062484 priority Critical patent/WO2011004481A1/fr
Publication of WO2011004481A1 publication Critical patent/WO2011004481A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2400/00—Loudspeakers
    • H04R2400/11—Aspects regarding the frame of loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the present invention relates to a speaker device.
  • 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 present invention is an example of a problem to deal with such a problem. That is, to provide a thin speaker device that can emit a large volume of reproduced sound, and to obtain a thin speaker device, a plurality of drive systems including a magnetic circuit and a voice coil are arranged in a flat shape. It is an object of the present invention to provide a terminal portion for supplying an audio signal to a voice coil of a driving system with relatively good space efficiency.
  • the speaker device includes at least a configuration according to the following independent claims.
  • a plurality of voice coils that receive a sound signal and vibrate in a direction different from the diaphragm; a plurality of magnetic circuits each having a magnetic gap in which each of the voice coils is disposed; And a rigid vibration direction converter that transmits the vibration of the voice coil to the diaphragm, and extends from the one voice coil toward the other voice coil.
  • a common terminal portion for the plurality of voice coils is provided in the stationary portion.
  • FIG. 5 (a) is a side view
  • FIG.5 (b) is a perspective view
  • FIG.5 (c) is an A section enlarged view).
  • FIG. 2 [Basic configuration of speaker device; FIG. 2] 2A and 2B are explanatory views showing the basic configuration of the speaker device according to the embodiment of the present invention (FIG. 2A is a cross-sectional view along the X-axis direction, and FIG. 2B shows the operation of the drive unit). Explanatory drawing).
  • the speaker device 1 includes a diaphragm 10, a stationary unit 100 that supports the diaphragm 10 so as to freely vibrate along a vibration direction, a driving unit 14 that is provided in the stationary unit 100 and that vibrates the diaphragm 10 with an audio signal.
  • the drive unit 14 includes a magnetic circuit 20 that forms a magnetic gap 20G, a voice coil 30 that receives an audio signal and vibrates in a direction different from the vibration direction of the diaphragm 10, and the direction of vibration of the voice coil 30.
  • a vibration direction conversion unit 50 that converts and transmits the vibration to the diaphragm 10 is provided.
  • the voice coil 30 is supported by the voice coil support unit 40, but the voice coil 30 itself may be connected to the vibration direction conversion unit 50.
  • the vibration direction of the voice coil 30 is defined as the X-axis direction, and the two directions orthogonal thereto are defined as the Y-axis direction and the Z-axis direction, respectively.
  • the diaphragm 10 may have a substantially rectangular shape in plan view, a circular shape, an elliptical shape, or other shapes.
  • the cross-sectional shape of the diaphragm 10 can be formed in a predetermined shape such as a flat plate shape, a dome shape, or a cone shape, for example.
  • the cross-sectional shape of the diaphragm 10 is a plane, but may be a curved shape.
  • the overall height of the diaphragm 10 may be made relatively small, and the speaker device 1 may be thinned.
  • the stationary part 100 is a general term for parts that support vibrations such as the vibration plate 10 and the driving part 14.
  • the stationary part 100 includes a frame 12, a yoke part that also functions as the frame 12, and a mounting unit (to be described later). It hits.
  • the stationary part 100 is not intended to be completely stationary per se, but is entirely oscillated under the influence of the vibration of the driving part 14 or other force. Also good.
  • the outer peripheral portion of the diaphragm 10 is supported by a frame 12 that is a stationary portion 100 via an edge 11.
  • the drive unit 14 includes a magnetic circuit 20, a voice coil 30, and a vibration direction conversion unit 50.
  • the voice coil 30 vibrates in a uniaxial direction along the magnetic gap 20G of the magnetic circuit 20, and the vibration is converted into a vibration direction conversion unit. 50 changes its direction and transmits it to the diaphragm 10.
  • the voice coil 30 vibrates along the X-axis direction, and the diaphragm 10 is arranged so as to vibrate in the Z-axis direction perpendicular to the X-axis direction.
  • the diaphragm 10 is vibrated in the Z-axis direction by converting the vibration in the direction into a changing oblique angle.
  • the magnetic circuit 20 includes a magnet 21 (21A, 21B) and a magnetic pole member (yoke part) 22 (22A, 22B) so that a plurality of magnetic gaps 20G are arranged along the vibration direction (for example, the X-axis direction) of the voice coil 30. It has.
  • the magnetic pole directions of the magnets 21 (21A, 21B) are set so that the magnetic field directions of the pair of magnetic gaps 20G are opposite to each other ( ⁇ Z-axis direction), and the magnetic gaps having magnetic fields in the opposite directions to each other.
  • a direction along the magnetic gap 20G ( ⁇ X-axis) is arranged in the voice coil 30.
  • Direction) driving force (Lorentz force, electromagnetic force).
  • the arrangement relationship between the magnet 21 and the magnetic pole member (yoke part) 22 is not limited to the illustrated example.
  • rigidity including bending rigidity and torsional rigidity
  • a plurality of conductive layers are formed on the outer side of the conducting wire in the flat insulating member as the voice coil support portion 40.
  • the conductive layer 43 is electrically connected to a lead line 31 (see FIG. 17) drawn from the start point and end point of the conducting wire.
  • the lead wire 31 is constituted by a part of a conductive member described later. Further, it is electrically connected to the outside via a holding unit 15 described later, and functions as a relay line for inputting a voice signal from the outside to the voice coil 30.
  • a space for routing the wiring is required separately.
  • the conductive layer 43 see FIG.
  • the voice coil 30 and the voice coil support portion 40 are formed in a flat plate shape, but are not limited to this, and may be formed in a cylindrical shape.
  • the vibration direction conversion portion is connected to the end portion on the vibration direction conversion portion 50 side so that the angle can be changed. You may attach the flat cover part which makes it possible.
  • the voice coil 30 is formed by winding a conducting wire (conductive member) to which an audio signal is input, and is itself arranged so as to be able to vibrate on the stationary part 100 or the stationary part 100 via the voice coil support part 40. Is arranged so as to freely vibrate.
  • the voice coil support portion 40 can be formed of, for example, a flat insulating member, and the voice coil 30 is supported on the surface or inside thereof.
  • the voice coil support portion 40 By forming the voice coil support portion 40 with, for example, a flat insulating member, rigidity (including bending rigidity and torsional rigidity) can be added to the entire voice coil 30.
  • the flat insulating member serving as the voice coil support portion 40 has a plurality of conductive layers formed on the outer side of the conducting wire.
  • the conductive layer 43 (see FIG. 17) is electrically connected to a lead line 31 (see FIG. 17) drawn from the start point and end point of the conducting wire.
  • This lead line 31 (refer FIG. 17) is comprised by a part of electrically-conductive member mentioned later, for example. Further, it is electrically connected to the outside via a holding unit 15 (see FIG.
  • the conductive layer 43 (see FIG. 17) described later, and functions as a relay line for inputting a voice signal from the outside to the voice coil 30.
  • a lead wire that is separated from the voice coil is routed in the speaker device as a relay wire, a space for routing the wiring is required separately.
  • the conductive layer 43 (see FIG. 17) as a relay line on the surface of the voice coil support portion 40, it is not necessary to secure a space for the relay line, and the speaker device can be thinned. .
  • the voice coil 30 is held on the stationary part 100 by a holding part (not shown).
  • the holding unit is configured to hold the voice coil 30 or the voice coil support unit 40 so as to freely vibrate along the vibration direction (for example, the X-axis direction) with respect to the stationary unit 100 and to prevent the voice coil 30 or the voice coil support unit 40 from moving in other directions.
  • the holding portion can be deformed along the vibration direction (for example, the X-axis direction) of the voice coil 30, and can be formed by a curved plate member having rigidity in a direction crossing the vibration direction.
  • the voice coil 30 is relatively large when driving the speaker by making the length of the voice coil in the direction orthogonal to the vibration direction of the voice coil 30 relatively large compared to the length of the voice coil 30 in the vibration direction. A driving force can be obtained.
  • the vibration direction conversion part 50 is formed at the both ends of the link part 51 and the rigid link part 51 that is obliquely provided so that the angle can be freely changed between the voice coil 30 or the voice coil support part 40 and the diaphragm 10.
  • the joint part 52 used as the fulcrum of the angle change of the conversion part 50 is provided.
  • the connecting portion 53 of the vibration direction conversion unit 50 is, for example, an adhesive as a bonding member or both surfaces of the vibration plate 10 or the voice coil 30 or the attached member 200 including other members than the vibration plate 10 and the voice coil 30. They are connected by a connecting member such as a tape or a screw as a fastening member, and the joint portion 52 is arranged so as to be close to the attached member 200.
  • the connecting portion 53 (53A) at one end of the vibration direction changing portion 50 is connected to the voice coil 30 or the voice coil support portion 40 via the connecting portion 60, but directly without using the connecting portion 60. You may connect.
  • the connecting portion 60 is formed between the end portion on the voice coil side of the vibration direction converting portion 50 and the end portion on the vibration direction changing portion side of the voice coil 30 or the voice coil support portion 40, and both ends thereof in the vibration direction. They are connected at intervals along the line.
  • the connection part 60 absorbs the thickness of the magnetic circuit 20, and is aiming at thickness reduction of a speaker apparatus.
  • a contact avoiding portion 70 that avoids contact with the joint portion 52 is formed on the surface side of the attached member 200 adjacent to the joint portion 52 of the vibration direction changing portion 50.
  • the contact avoiding portion 70 also functions as a joining member restraining portion that restrains the joining member that joins the vibration direction changing portion 50 and the attached member 200.
  • the contact avoiding portion 70 is formed in a concave shape along the joint portion 52, for example, a concave portion, a notch portion, a groove portion or the like, and the joint portion 52 and the surface of the attached member 200 disposed in the vicinity of the joint portion 52.
  • a predetermined space is formed between the joint portion 52 and the adhesive member interposed between the vibration direction changing portion 50 and the attached member 200.
  • a notch 71 is formed as a contact avoidance portion 70 in the connecting portion 60 to be the attached member 200 so as to be close to the joint portion 52 (52A), and a recess 72 is provided as the contact avoidance portion 70 in the diaphragm 10. It forms so that it may adjoin to joint part 52 (52B).
  • a bonding member such as an adhesive or a double-sided tape
  • the adhesive protrudes toward the joint part 52.
  • the end portion of the double-sided tape enters the cutout portion 71 or the concave portion 72 so as not to contact and adhere to the joint portion 52.
  • such a speaker device 1 inputs a voice signal SS as an electrical signal to the voice coil 30 of the drive unit 14, thereby providing a magnetic signal as shown in FIG.
  • the voice coil 30 or the voice coil support portion 40 vibrates in the X-axis direction shown in the figure along the magnetic gap 20G of the circuit 20, for example.
  • the vibration is changed in direction by the vibration direction converter 50 and transmitted to the diaphragm 10, and the diaphragm 10 is vibrated in, for example, the Z-axis direction shown in FIG. A corresponding sound is emitted.
  • the voice coil 30 is moved along the vibration direction of the diaphragm 10.
  • the back side of the diaphragm 10 can be made thinner. As a result, a thin speaker device capable of reproducing the low sound range with high sound pressure can be obtained.
  • the speaker device 1 can be increased even if the amplitude of the diaphragm 10 is increased by increasing the amplitude of the voice coil 30.
  • the thickness in the acoustic radiation direction does not increase. This makes it possible to obtain a thin speaker device that can emit a large volume of reproduced sound.
  • the adhesive diffuses and extends with the joining and protrudes toward the joint portion 52.
  • the joint portion 52 may harden and become unable to move.
  • the joint portion 52 may harden and become inoperable. There is. Further, the joint portion 52 that has been cured by adhering an adhesive or an end portion of a double-sided tape may be broken due to repeated bending, refraction, or rotational movement.
  • the portion where the adhesive or the end of the double-sided tape is attached contacts or leaves the attached member 200 such as the diaphragm 10, the voice coil 30, or other members. Repeatedly, an abnormal sound (a hit sound) is generated each time.
  • the vibration direction changing portion 50 and the attached member 200 are reduced. There is a problem that the coupling force is reduced, and peeling or the like occurs from the end surface, resulting in abnormal noise, or even complete peeling that leads to destruction of the speaker.
  • the joint portion 52 is disposed in the vicinity of the attached member 200, the joint portion 52 comes into contact with the attached member 200, the joint portion 52 is damaged, or the vibration direction changing portion 50 is attached to the attached member. In some cases, bending, refraction, or rotational movement with respect to 200 cannot be performed. However, in this speaker device 1, since the contact avoiding portion 70 is formed on the surface side of the mounted member 200 close to the joint portion 52, the contact with the joint member 52 is suppressed and abnormal noise is generated due to the contact. Can be suppressed.
  • a bonding member such as an adhesive or a double-sided tape used to connect the connecting portion 53 of the vibration direction changing portion 50 and the attached member 200 protrudes, a contact avoiding portion that functions as a bonding member restraining portion. It is possible to prevent the movement of the joint portion 52 from being blocked by entering the 70 and adhering to the joint portion 52. As a result, the function of the joint portion 52 can be maintained while maintaining a high coupling force between the vibration direction converter 50 and the attached member 200. Since the vibration direction converter 50 reliably bends, refracts, or rotates with respect to the attached member 200, contact of the joint portion 52 to the attached member 200 due to breakage, generation of abnormal noise, and the like can be suppressed.
  • FIGS. 3 to 14 are explanatory diagrams for explaining a configuration example and operation of the vibration direction converter 50.
  • the rigid vibration direction conversion unit 50 that changes the direction of the vibration of the voice coil 30 and transmits the vibration to the vibration plate 10 forms joint portions 52 on the vibration plate 10 side and the voice coil 30 side in the vibration direction of the voice coil 30. It has the link part 51 inclined with respect to it.
  • the joint part 52 is a part that rotatably joins two rigid members, or a part that refracts or bends two integrated rigid parts.
  • the joint portion 52 is a rigid portion formed at the end.
  • the rigidity means that the vibration of the voice coil 30 is not deformed to such an extent that it can be transmitted to the diaphragm 10, and does not mean that it does not deform at all.
  • the link portion 51 can be formed in a plate shape or a rod shape.
  • one link portion 51 is provided, joint portions 52 (52A, 52B) are formed at both ends thereof, and one joint portion 52A is an end portion of the voice coil 30 or the voice coil support portion 40.
  • the other joint portion 52B is formed on the diaphragm 10 side.
  • the other joint portion 52B may be connected to the diaphragm 10 or may be connected to the diaphragm 10 via another member.
  • a known member can be used.
  • a metal member that improves the joint strength between the joint portion 52 and the diaphragm 10 may be selected (the diaphragm 10 is not shown in FIG. 3). is doing).
  • FIG. 5A shows a case where the link portion 51 is at an intermediate position of vibration.
  • the link portion 51 is obliquely provided at an angle ⁇ 0 between the voice coil 30 (or the voice coil support portion 40) and the diaphragm 10.
  • the joint portion 52B on the diaphragm 10 side is disposed at a position Z 0 away from the voice coil 30 by a distance H 0 along the vibration direction of the diaphragm 10.
  • the vibration direction of the voice coil 30 (or the voice coil support portion 40) is regulated so as to vibrate in one axial direction (for example, the X-axis direction), and the vibration direction of the diaphragm 10 is different from the vibration direction of the voice coil 30.
  • the vibration direction is regulated so as to vibrate (eg, in the Z-axis direction).
  • the position X 2 to move is formed on the end portion of the voice coil 30 joint portion 52A from the initial position X 0 to the vibration direction (-X axis direction) by [Delta] X 2 reaches Then, the inclination angle of the link portion 51 is converted to ⁇ 2 ( ⁇ 0 ⁇ 2 ), and the position of the joint portion 52B on the vibration plate 10 side is ⁇ Z 2 in the vibration direction ( ⁇ Z axis direction) of the vibration plate 10. move and reaches the position Z 2. That is, the diaphragm 10 is pushed down along the vibration direction by ⁇ Z 2 .
  • the function of the vibration direction conversion unit 50 including the link part 51 and the joint part 52 converts the vibration of the voice coil 30 into the obliquely changing angle of the link part 51 and transmits it to the diaphragm 10.
  • the vibration plate 10 is caused to vibrate in a direction different from the vibration direction of the voice coil 30.
  • FIG. 4 is an explanatory diagram for explaining another configuration example of the vibration direction conversion unit 50 and its operation. More specifically, FIG. 5B shows the state of the vibration direction converter 50 in a state where the diaphragm 10 is located at the reference position, and FIG. FIG. 6C shows the state of the vibration direction conversion unit 50 in a state where the vibration plate 10 is displaced in the opposite direction with respect to the acoustic radiation side with respect to the reference position. (The diaphragm 10 is not shown).
  • the vibration direction conversion section 50 has a function of converting the angle by receiving a reaction force from the stationary section 100 such as the frame 12 where the link portion 51 is located on the opposite side to the diaphragm side.
  • the vibration direction converter 50 includes a first link portion 51A having one end as a joint portion 52A on the voice coil 30 side and the other end as a joint portion 52B on the diaphragm 10 side, and one end as a first link portion. 51 and a second link portion 51B having the other end as a joint portion 52D with the stationary portion 100.
  • the first link portion 51A and the second link portion 51B are voiced.
  • the coils 30 are inclined in different directions with respect to the vibration direction of the coil 30.
  • the vibration direction conversion unit 50 includes a first link portion 51A having one end as a first joint portion 52A on the voice coil 30 side and the other end serving as a second joint portion 52B on the diaphragm 10 side, A second link portion 51B having one end as a third joint portion 52C with the intermediate portion of the first link portion 51A and the other end as a fourth joint portion 52D with the stationary portion 100;
  • the joint portion 52A, the second joint portion 52B, and the fourth joint portion 52D are on a circumference having a diameter substantially equal to the length of the first link portion 51A centered on the third joint portion 52C. It is in.
  • the joint portion 52 ⁇ / b> D is the only joint portion whose position does not change and is supported by the stationary portion 100 (or the frame 12), and applies a reaction force from the stationary portion 100 to the link portion 51. ing.
  • the voice coil 30 or the voice coil support section 40
  • ⁇ X 1 in the X-axis direction from the reference position X 0
  • the link part 51A and the second link part 51B rise substantially at the same angle, and the joint part 52B receives the reaction force from the stationary part 100 at the joint part 52D, and the joint part 52B reliably moves the diaphragm 10 to the reference position Z 0.
  • the length a of the link part from the joint part 52A to the joint part 52C, the length b of the link part from the joint part 52C to the joint part 52B, and the length c of the link part from the joint part 52C to the joint part 52D. are substantially equal, and the joint portion 52A and the joint portion 52D are preferably disposed substantially parallel to the moving direction of the voice coil 30.
  • the angle formed by the straight line passing through the joint part 52A and the joint part 52D and the straight line passing through the joint part 52B and the joint part 52D are at right angles.
  • the joint portion 52B between the first link portion 51A and the diaphragm 10 moves along the Z-axis perpendicular to the X-axis.
  • Can be transmitted to the diaphragm 10 by converting the vibration direction thereof into a direction perpendicular thereto.
  • the vibration direction converter 50 includes the link portion 51 and joint portions 52 (52A, 52B) formed at both ends thereof.
  • connection portions 53 (a first connection portion 53A and a second connection portion 53B) are formed on both ends of the link portion 51 via joint portions 52.
  • the first connecting portion 53A is a portion that is connected to the voice coil 30 or the voice coil support portion 40 directly or via another member and vibrates integrally with the voice coil 30, and the second connecting portion 53B. Is a portion that is connected to the diaphragm 10 directly or via another member and vibrates integrally with the diaphragm 10.
  • the link portion 51, the joint portions 52A and 52B, and the first and second connection portions 53A and 53B are integrally formed, and the joint portions 52A and 52B include the joint portions 52A and 52B.
  • the continuous member may be a member that forms the entirety of the link portion 51 and the first and second connection portions 53A and 53B, or the link portion 51 and the first and second connection portions 53A and 53B.
  • the member which forms a part of may be sufficient.
  • the joint portion 52 is formed in a linear shape extending in the width direction as shown in FIG. Further, since the link portion 51 is required to have a rigidity that does not deform, and the joint portion 52 is required to be refractable, the thickness of the joint portion 52 with respect to the thickness t1 of the link portion 51 or the connecting portion 53. By forming the thickness t2 in a thin shape, the integral member has different properties.
  • the change in thickness between the joint portion 52 and the link portion 51 is formed in an inclined surface shape, and inclined surfaces 51t and 53t whose surfaces face each other at the end portions on both sides of the joint portion 52 are formed. Thereby, when the angle of the link portion 51 is changed, the thickness of the link portion 51 can be prevented from interfering with the angle change.
  • the contact avoiding portion 70 is a recess or notch 71, and in the example shown in FIG.
  • a space is formed between the joint portion 52A and the connecting portion 60.
  • the diaphragm 10 of the mounted member 200 disposed in the vicinity of the joint portion 52B is formed with a concave portion or notch portion 72 as the contact avoiding portion 70, and a concave portion having a curved cross section in the illustrated example.
  • a space is formed between the joint portion 52B and the diaphragm 10.
  • the adhesive is bonded to the joint portions 52A, Even if it protrudes toward 52B, it enters the recess or notch 71, 72, so it does not adhere to the joint portions 52A, 52B, and even if attached, it is only a portion that is not a joint (a portion having rigidity that does not bend or bend). The hindrance to the bending operation or the bending operation of the joint portions 52A and 52B can be suppressed.
  • a rigid member is integrated with a refracting continuous member to form a link portion or a connecting portion, and the joint portion is a portion constituted by a continuous member.
  • a rigid member 50Q is attached to the surface of a continuous member 50P, which is a bendable sheet-like member, to form a link portion 51 or a connecting portion 53.
  • the continuous member 50P is continuously extended in the part of the both sides straddling the joint part 52, and the joint part 52 is substantially formed only by the continuous member 50P so that bending is possible.
  • the link portion 51 or the connecting portion 53 in which the rigid member 50Q is attached to the continuous member 50P is formed in a portion having rigidity.
  • the link member 51 or the connecting member 53 is formed by attaching the rigid member 50Q so as to sandwich the continuous member 50P. Again, the portion where the rigid member 50Q is not attached becomes the joint portion 52.
  • the rigid member forming the link portion 51 is formed in a multilayer by laminating the rigid members 50Q1 and 50Q2. Furthermore, in the same figure (c), you may make the rigid member 50Q1 or the rigid member 50Q2 into a multilayer structure. In this way, by partially attaching the rigid member 50Q to the refracting continuous member 50P, the refracting joint portion 52, the rigid link portion 51, and the connecting portion 53 can be integrally formed.
  • the continuous member 50P is preferably strong and durable enough to withstand the refraction of the joint portion 52 repeated when the speaker device is driven, and flexible so that no sound is emitted when the refraction operation is repeated.
  • the continuous member 50P can be formed of a woven or non-woven fabric of high-strength fibers.
  • woven fabrics include plain weaves of uniform materials, plain weaves with different warp and weft yarns, plain weaves with different yarn materials alternately, plain weaves with twisted yarns, flat weaves of assortment, etc.
  • the high-strength fiber When all or part of the high-strength fiber is used, the high-strength fiber is arranged along the vibration direction of the voice coil support portion 40, which is sufficient for the vibration of the voice coil 30 or the voice coil support portion 40. Strength can be obtained. When warp and weft are both high-strength fibers, both the warp and wefts are evenly tensioned by tilting the fiber direction by approximately 45 ° with respect to the vibration direction of the voice coil support section 40 to improve durability. Can be made. As the high-strength fiber, an aramid fiber, a carbon fiber, a glass fiber, or the like can be used. Further, in order to adjust physical properties such as bending stress and rigidity of the continuous member, a dumping agent (damping agent, braking material) may be applied (applied).
  • a dumping agent damping agent, braking material
  • the rigid member 50Q is preferably lightweight, easy to mold and rigid after curing, and thermoplastic resin, thermosetting resin, metal, paper, or the like can be used. After the rigid member 50Q is formed into a plate shape, the vibration direction changing portion 50 can be formed by sticking the surface of a portion excluding the joint portion 52 of the continuous member 50P with an adhesive as a bonding agent. When a thermosetting resin is used as the rigid member 50Q, the vibration direction changing portion 50 is formed by partially impregnating the resin in the link portion 51 and the connecting portion 53 of the fibrous continuous member 50P and then curing the resin. can do. When resin or metal is used as the rigid member 50Q, the continuous member 50P and the rigid member 50Q can be integrated in the link portion 51 and the connecting portion 53 by insert molding.
  • FIG. 7 and 8 are explanatory views showing a speaker device employing the above-described vibration direction converter
  • FIG. (b) is an explanatory view showing the operation of the drive unit.
  • the first connecting portion 53A that is connected to the voice coil support portion 40 and vibrates integrally with the voice coil support portion 40, and is connected to the diaphragm 10 and vibrates.
  • a link mechanism 50 ⁇ / b> L including a second connecting portion 53 ⁇ / b> B that vibrates integrally with the plate 10 and including a plurality of link portions is formed.
  • the vibration direction converter 50 is formed by a link mechanism 50L including a rigid first link portion 51A and a second link portion 51B.
  • the first link portion 51A has a first connection portion 53A formed on one end side via a joint portion 52A, and a second connection portion 53B formed on the other end side via a joint portion 52B.
  • the second link portion 51B is formed with an intermediate portion of the first link portion 51A via a joint portion 52C on one end side, and does not move against vibration of the voice coil support portion 40 via the joint portion 52D on the other end side.
  • the connecting portion 53C is formed.
  • the first connecting portion 53A is connected to the end of the voice coil support portion 40 via the connecting portion 60 or directly, and the second connecting member 53B is directly connected to the diaphragm 10.
  • the stationary connection portion 53 ⁇ / b> C is connected to the bottom portion 12 ⁇ / b> A of the frame 12 that becomes the stationary portion 100.
  • the first link portion 51 ⁇ / b> A and the second link portion 51 ⁇ / b> B are inclined in different directions with respect to the vibration direction (X-axis direction) of the voice coil support portion 40, and the stationary portion 100 is in relation to the vibration direction conversion portion 50. It is provided on the side opposite to the diaphragm 10 side.
  • the stationary portion 100 is formed by the bottom portion 12A of the frame 12, but instead, the yoke portion 22A of the magnetic circuit 20 extends below the vibration direction changing portion 50, and the yoke portion 22A is The stationary part 100 may be used.
  • the joint portion 52A on the voice coil support portion 40 side moves in the X-axis direction as the voice coil support portion 40 moves, and the joint portion 52D connected to the stationary portion 100 is fixed.
  • the movement of the joint portion 52A is converted into a changing angle between the first link portion 51A and the second link portion 51B by the reaction force received from the stationary portion 100, and the joint portion 52B on the diaphragm 10 side Is moved in the vibration direction of the diaphragm 10 (for example, the Z-axis direction).
  • the speaker device 1B shown in FIG. 8 includes the drive units 14 shown in FIG. 7 arranged symmetrically facing each other, and includes drive units 14 (R) and 14 (L).
  • R drive units 14 (R) and 14 (L).
  • R drive units 14 (R) and 14 (L).
  • R link mechanisms 50L (R), 50L (L), voice coil support portions 40 (R), 40 (L), magnetic circuits 20 (R), 20 (L), and connecting portions 60 ( R), 60 (L).
  • the link mechanisms 50L (R) and (L) include a pair of first link portions 51A, a pair of second link portions 51B, a pair of first connection portions 53A, and a second connection portion that are arranged to face each other. 53B and the immovable connecting portion 53C are integrally formed to form the vibration direction changing portion 50.
  • the pair of first connection portions 53A are respectively connected to the voice coil support portion 40, the second connection portion 53B is connected to the diaphragm 10, and the stationary connection portion 53C is connected to the bottom portion 12A of the frame 12.
  • the two drive units 14 (R), 40 (R), 40 (L) are reversed by synchronizing the vibration directions of the voice coil support units 40 (R), 40 (L).
  • the diaphragm 10 can be vibrated by combining the driving force of 14 (L). Further, since the joint portion 52B on the diaphragm 10 side can be provided at a plurality of locations, the support points of the diaphragm 10 are increased, and the vibration phase of the diaphragm 10 can be matched.
  • FIG. 9 and 10 are explanatory views showing a more specific vibration direction converting portion
  • FIG. 9A is a perspective view
  • FIG. 9B is an enlarged view of a portion A in FIG. 9A
  • FIG. 10 (a) is a plan view of a state in which the joint portion is stretched and the whole is flattened
  • FIG. 10 (b) is a side view of a state in which the joint portion is stretched and the whole is flattened.
  • the vibration direction changing part 50 is formed by one integrated part, and as described above, the pair of first link parts 51A and the joint parts 52A and 52B are formed at both ends thereof, and the pair of first link parts 51A and 52B are formed.
  • Two link portions 51B and joint portions 52C and 52D are formed at both ends thereof. Further, a first connection portion 53A is formed on one end side of the pair of first link portions 51A via a joint portion 52A, and the joint portions 52B formed on the other end side of the pair of first link portions 51A. A second connecting portion 53B is formed, and a stationary connecting portion 53C is formed between the joint portions 52D formed on the other end side of the second link portion 51B.
  • the first link portions 51A and 51A and the second connection portion 53B are refracted in a convex shape, and the second link portions 51B and 51B and the stationary connection portion 53C are refracted in a concave shape.
  • the joint portion 52A is formed to be refracted by the above-described continuous member 50P, and the above-described rigid member 50Q is attached to the first link portion 51A, so that the first connecting portion.
  • the above-described rigid member 50Q is also attached to 53A.
  • all the joint parts mentioned above are formed in the same composition.
  • inclined surfaces 51t and 53t are formed to face each other.
  • the vibration direction changing portion 50 including the link portions 51A and 51B, the joint portions, and the connecting portions 53A, 53B, and 53C is formed from an integral sheet-like component.
  • the joint portion 52A is formed so as to linearly cross the integral sheet-like component, and the joint portions 52B, 52C, 52D are formed so as to partially traverse the integral sheet-like component.
  • the second link portions 51B and 51B and the stationary connection portion 53C are cut out by forming a pair of cutout portions 50S along the longitudinal direction of the integral sheet-like component.
  • a resin material for forming the rigid member 50Q is applied to the entire surface of the continuous member 50P that is a sheet-like member.
  • V-shaped die cutting is performed. Thereafter, the above-described notch 50S is formed, and the resin material is cured.
  • the resin material used here a liquid uncured resin material or a resin film can be used.
  • the rigid member 50Q may be formed simultaneously with the resin material. At this time, it is preferable that a groove or a recess having a V-shaped cross section is formed in advance in a mold for molding the rigid member 50Q.
  • FIGS. 11A and 13 are explanatory diagrams illustrating another example of the vibration direction converter 50 (FIG. 11A is a side view, FIG. 11B is a perspective view, and FIG. 12 is an operation explanatory diagram).
  • FIGS. 13A and 13B are explanatory diagrams of formation examples.
  • This vibration direction conversion part 50 (link mechanism 50L) is a case where a pair of drive parts are provided and the vibration direction conversion parts 50 are arranged opposite to each other substantially symmetrically, and a parallel link is formed by a plurality of link portions. Yes.
  • the vibration direction converter 50 has one end as a joint portion 52A (R), 52A (L) with the first connection portion 53A (R), 53A (L) and the other end as a joint with the second connection portion 53B.
  • a pair of first link portions 51A (R) and 51A (L) are provided as portions 52B (R) and 52B (L).
  • one end is a joint part 52C (R), 52C (L) with the intermediate part of the first link parts 51A (R), 51A (L), and the other end is a joint part 52D ( R) and 52D (L) have a pair of second link portions 51B (R) and 51B (L).
  • the first connecting portion 53A is connected to the voice coil 30 or the voice coil support portion 40 directly or via the connecting portion 60 as another member, and the second connecting portion 53B is connected to the diaphragm 10.
  • the stationary connection portion 53 ⁇ / b> C is connected to the bottom portion 12 ⁇ / b> A of the frame 12 that becomes the stationary portion 100, the yoke portion 22 that forms the magnetic circuit 20, and the like.
  • Such a link mechanism 50L of the vibration direction changing section 50 has a function of combining the link mechanism of the embodiment shown in FIG. 7 and the parallel link mechanism, and each link portion and the connecting portion are connected to the continuous member 50P.
  • the rigid members 50Q are integrally formed with each other, the joint portions between the link portions are formed in a linear shape by a refracting continuous member 50P, and the link portions are formed integrally with each other via the joint portions. Yes.
  • the second connecting portion 53B disposed in the vicinity of the joint portions 52F (R) and 52F (L) and the pair disposed in the vicinity of the joint portions 52A (R) and 52A (L).
  • a recess 76 is formed as the contact avoiding portion 70 so that a space is formed between each joint portion and the connecting portion.
  • this vibration direction converter 50 will be described with reference to FIG.
  • the stationary connection portion 53 ⁇ / b> C supported by the frame 12 functions as the stationary portion 100.
  • the second is performed by the parallel link mechanism.
  • the first link portions 51A (R), (L) and the third link portions 51C (R) forming the parallel links are raised while maintaining the parallel connection portion 53B and the connection portion 53E integrated therewith in a parallel state. ), (L) is changed so that the angle rises.
  • the first link portion 51A (R) receives the reaction force from the stationary portion.
  • (L) and the third link portions 51C (R), (L) are reliably changed, and the displacement of the joint portions 52A (R), (L) from the position X0 to the position X1 is determined by the diaphragm 10. Is reliably converted into a displacement from the position Z0 to the position Z1.
  • the angle of the portions 51C (R) and (L) is reliably changed, and the displacement of the joint portions 52A (R) and (L) from the position X0 to the position X2 is changed from the position Z0 to the position Z2 of the diaphragm 10. Hence convert to
  • (L) and the second connecting portion 53B are converted into vibrations in the Z-axis direction.
  • the diaphragm 10 is supported in a wide range and is provided with vibrations having substantially the same phase and substantially the same amplitude. Therefore, the vibration of the voice coil support unit 40 with respect to the planar diaphragm 10 having a large area is provided. Can be transmitted in substantially the same phase.
  • the vibration direction converter 50 has the connecting portions 53B, 53D (R), (L), and the third link portions 51C (R), (L) parallel to a pair in the width direction.
  • the first link portions 51A (R) and (L) are formed in a bifurcated manner, and the joint portions 52C (R) and the second link portions 51B (R) and (L) are formed at intermediate portions thereof.
  • (L) is formed, and the second link portions 51B (R), (L) and the connecting portion 53C are connected in parallel in a pair in the width direction 53B, 53D (R), (L), third. Between the link portions 51C (R) and (L).
  • the link portion By forming the link portion with a single sheet-like (plate-like) component in this way, the diaphragm 10 can be supported and vibrated on the surface, so that the entire diaphragm 10 can be vibrated substantially in phase. It is possible to suppress divided vibration.
  • the vibration direction converter 50 of this embodiment refracts the entire plate-like member forming the link portion into a convex shape so that the first link portion 51A (R). , (L) and the second connecting portion 53B are formed, and the plate-like member is partially cut out and refracted into a concave shape so as to be fixed to the second link portions 51B (R), (L). 53C is formed.
  • the vibration direction changing portion 50 is formed by bonding a plurality of (two) sheet-like (plate-like) parts 501, 502, In the sheet-like component 501, the first connecting portions 53A (R), (L), the first link portions 51A (R), (L), the second link portions 51B (R), (L), second The connecting portion 53B and the stationary connecting portion 53C are formed, and the connecting portion 53D, the third link portions 51C (R) and (L), and the connecting portion 53E are formed on the other sheet-like component 502.
  • the connecting portions 53D (R), (L) and the third link portions 51C (R), (L) are connected along the first link portions 51A (R), (L) and the second connecting portion 53B.
  • the sheet-like component 502 is formed with an opening 502A corresponding to the second link portions 51B (R) and (L) and the stationary connection portion 53C.
  • the size of the opening 502A formed in the other sheet-like component 502 corresponding to the second link portions 51B (R), (L) and the stationary connection portion 53C in one sheet-like component 501 is as follows.
  • the other sheet-like component 502 is formed so as to expand from one end to the inside. By doing so, the second link portions 51B (R), (L) and the immovable connecting portion 53C are prevented from coming into contact with other sheet-like parts 502, and the link mechanism moves smoothly. Can be made.
  • the two parts 501 and 502 are connected with the continuous member 50P facing each other.
  • the continuous member 50P can be integrated and the joint portion 52 can be smoothly refracted.
  • a recess or notch 76 is formed as a contact avoidance portion 70 at a location close to the joint portion 52.
  • an inclined surface as shown in FIG. 5C is formed at the end of each link part.
  • the inclined surfaces are formed so as not to interfere with each other when the link portion is refracted at the joint portion, so that the link portion can be efficiently refracted at the joint portion.
  • the above-described sheet-like component 502 is formed integrally with the end of the above-mentioned sheet-like component 501, and the folding line f is formed in the direction of the arrow.
  • the vibration direction converter 50 shown in FIGS. 11 and 12 can be obtained.
  • a resin material for forming the rigid member 50Q is laminated on the entire surface of the continuous member 50P, which is a sheet-like member, to form each joint portion and inclined surfaces on both sides thereof. It can be easily formed by performing V-shaped die cutting as much as possible, and then forming the notch 50S and the opening 502A described above and curing the resin material.
  • the rigid member 50Q may be formed simultaneously with the resin material. At this time, it is preferable that a groove or a recess having a V-shaped cross section is formed in advance in a mold for molding the rigid member 50Q.
  • the link mechanism of the vibration direction conversion unit 50 can be formed by using one integral part for the two opposing voice coil support units 40. Therefore, the assembly work can be easily performed even when a speaker device including a pair of drive units is formed. Further, by providing the immovable connecting portion 53C, the joint portion 52D (particularly with respect to the opposing vibration of the voice coil support portion 40 (the plurality of voice coil support portions 40 vibrate in opposite directions to each other). Even if R) and (L) are not supported by the frame 12, the positions of the joint portions 52D (R) and (L) are held constant, and this also leads to the speaker device of the vibration direction conversion unit. Can be simplified.
  • the right first link portion 51A (R) and the third link portion 51C (R), and the left first link portion are used as the link mechanism. Since the parallel link is formed by 51A (L) and the third link portion 51C (L), the second connecting portion 53B fixed to the diaphragm 10 against the opposing vibration of the voice coil support portion 40 is Z. It can be translated stably along the axial direction. As a result, it is possible to apply stable vibration to the planar diaphragm 10.
  • the driving force of the magnetic circuit 20 or the vibration of the voice coil 30 is increased. Does not directly affect the size of the speaker devices 1, 1A, 1B in the thickness direction (Z-axis direction). Therefore, it is possible to reduce the thickness of the speaker devices 1, 1A, 1B while increasing the volume.
  • the vibration direction conversion unit 50 converts the vibration direction of the voice coil support unit 40 and transmits it to the diaphragm 10 by a mechanical link mechanism, the vibration transmission efficiency is high.
  • the angle change between the first link portion 51A and the second link portion 51B is caused by the vibration of the voice coil support portion 40 and the reaction force from the stationary portion 100.
  • vibration from the voice coil support 40 can be transmitted to the diaphragm 10 more reliably. Thereby, good reproduction efficiency of the speaker devices 1A and 1B can be obtained.
  • the position of the end 40 ⁇ / b> A of the voice coil 30 or the voice coil support unit 40 and the vibration direction conversion unit can be provided by providing the connecting unit 60.
  • a step (interval) can be formed between the positions of the 50 end portions 50A.
  • the width (height) of the magnetic circuit 20 in the Z-axis direction can be accommodated within the height of the vibration direction converter 50, and the height of the magnetic circuit 20 required for securing the driving force can be reduced.
  • the speaker devices 1, 1 ⁇ / b> A, 1 ⁇ / b> B can be thinned while ensuring sufficient.
  • the necessary height of the vibration direction converting portion 50 (the length of the link portion 51) can be sufficiently secured.
  • the amplitude of the diaphragm 10 can be made relatively large.
  • the vibration of the voice coil support 40 can be stabilized by forming the bottom 61 of the connecting portion 60 so as to slide on the bottom 12A of the frame 12 or the stationary portion 100 with a predetermined gap. Is possible.
  • the movement of the end of the vibration direction converter 50 can be performed linearly, and the movement of the end of the vibration direction converter 50 connected to the diaphragm 10 can be reliably and stabilized.
  • the vibration direction conversion unit 50 shown in FIG. 14 is an improved example of the form shown in FIG.
  • the convex portion 510 is provided on the link portion where bending is likely to occur due to the opposing vibration of the voice coil support portion 40 to increase the rigidity.
  • the first link portions 51A (R), (L), the second link portions 51B (R), (L), the connecting portions 53D (R), (L), and the connecting portions 53C are convex.
  • a portion 510 is provided.
  • an opening 520 is provided in a link portion that does not particularly require strength, thereby reducing the weight of the vibration direction changing portion.
  • an opening 520 is provided in the connecting portion 53B.
  • the weight reduction of the vibration direction converter is particularly effective in widening the reproduction characteristics and increasing the amplitude and sound pressure level of the sound wave for a predetermined audio current.
  • [Power supply structure] 15 to 24 are explanatory diagrams for explaining a power feeding structure of the speaker device according to the embodiment of the present invention.
  • the speaker device according to the embodiment of the present invention is provided with the diaphragm 10, the stationary part 100 that supports the vibrating body 10 so as to be able to vibrate with reference to the basic structure described above, and is vibrated by an audio signal.
  • a drive unit 14 that applies vibration to the plate 10.
  • the drive unit 14 includes a plurality of voice coils 30 and 30 that receive a sound signal and vibrate in a direction different from that of the vibration plate 10.
  • a vibration direction conversion unit 50 having rigidity for transmission is provided.
  • the voice coil 30 extends from one voice coil 30 of the plurality of voice coils 30, 30 toward the other voice coil 30, Terminal portions 81, 81 common to 30 are provided in the stationary portion 100.
  • the terminal portion 81 is provided with a pair of terminal portions 81, and one end of each of the pair of voice coils 30 and 30 is connected to one terminal portion 81. The other ends of the pair of voice coils 30 and 30 are connected to the other terminal portion 81.
  • the arrangement of the terminal portions can be saved compared to the case where the terminal portions are provided at one end and the other end of each voice coil 30, respectively. it can.
  • the speaker device can be reduced in size or thickness.
  • terminal portions 81, 81 wirings (first wirings 80A) for electrically connecting the plurality of voice coils 30, 30 are formed.
  • first wirings 80A for electrically connecting the plurality of voice coils 30, 30.
  • the stationary part 100 of the speaker device 1 is formed of a first constituent member 100A and a second constituent member 100B.
  • the second component member 100 ⁇ / b> B is a frame disposed on the vibration direction conversion unit 50 side, and supports a part of the vibration direction conversion unit 50.
  • the terminal portions 81 and 81 are disposed between the first component member 10A and the second component member 100B.
  • the first component member 100 ⁇ / b> A is a frame disposed on the diaphragm 10 side, and supports the diaphragm 10 via the edge 11.
  • the first component member 100A and the second component member 100B support the magnetic circuit 20, and the first component member 100A supports one magnetic pole member (yoke portion 22) of the magnetic circuit 20.
  • the second component member 100B supports the other one-side magnetic pole member (yoke portion 22) of the magnetic circuit 20, so that the first component member 100A and the second component member 100B are coupled together.
  • a magnetic gap having a predetermined interval is formed between them.
  • an opening 100F is formed by a recess formed in the opposing surface.
  • the first component member 100A and the second component member 100B are formed with protruding portions 109 (109A, 109B) that support the terminal portions 81, 81, and the terminal portions 81, 81 protrude from the protruding portion 109A. It is sandwiched between the portion 109. As a result, the first component member 100A and the second component member 100B are coupled, and at the same time, the terminal portions 81 and 81 are stably fixed.
  • the stationary portion 100 includes an outer peripheral frame portion 101 and a bottom surface portion 107 that surround the magnetic circuit 20, and the terminal portions 81 and 81 are formed in a shape along the outer peripheral frame portion 101, It is attached to the outer peripheral frame portion 101. Accordingly, the terminal portions 81 and 81 do not protrude outward from the outer peripheral frame portion 101 of the stationary portion 100, and the device can be made compact. Further, since the terminal portions 81 and 81 are attached to the outer peripheral frame portion 101, the terminal portions 81 and 81 are stably fixed, and poor connection with the voice coils 30 and 30 can be avoided.
  • the terminal portions 81 and 81 are formed in a shape having a major axis extending from one voice coil 30 to the other voice coil 30 and a minor axis intersecting the major axis.
  • the terminal portions 81 and 81 may be arranged inside the outer peripheral frame portion 101. According to this, the terminal portions 81 and 81 can be provided without affecting the shape and size of the outer peripheral edge of the speaker device. it can. Moreover, you may arrange
  • Each of the outer peripheral frame portions 101, 101 in the first component member 100A and the second component member 100B has the above-described opening portion 100F in the plane facing the voice coil 30, and the terminal portion 81, 81 is arranged.
  • the terminal portions 81 and 81 are reinforcing portions that reinforce the opening portion 100F of the stationary portion 100.
  • connection portions 81a (see FIG. 19) to the wirings 82 and 82 (second wiring 80A) electrically connected to the outside are formed.
  • the first wiring 80A) and the wiring 82 (second wiring 80B) are electrically connected by the connecting portion 81a.
  • the wiring 82 (second wiring 80A) is fixed to the side surface of the stationary part 100 and connected to the terminal parts 81 and 81.
  • the outer peripheral frame portion 101 of the stationary portion 100 includes a side surface to which the wiring 82 (second wiring 80B) is attached, and guide portions 106 and 106 for guiding the wiring 82 and 82 are formed on the side surface of the stationary portion 100. Yes.
  • FIG. 16 is a perspective view showing the internal structure of the speaker device (a state in which the first component member 100A is removed), and FIG. 17 is a plan view showing the internal structure of the speaker device (a state in which the second component member 100B is removed).
  • 18 is a perspective view showing the internal structure of the speaker device (a state in which the second constituent member 100B is removed),
  • FIG. 19 is a perspective view showing the internal structure of the speaker device (an explanatory diagram of the connection state of wiring), and
  • FIG. FIG. 21 is a partially enlarged view showing the internal structure of the speaker device, and FIG.
  • the yoke portion 22 of the magnetic circuit 20 is provided with a protruding portion 22p for supporting the yoke portion 22 on the first component member 100A and the second component member 100B. It is engaged with the receiving portion 105 provided on the constituent member 100A and the second constituent member 100B.
  • Positioning pins 100P for positioning the terminal portions 81 and 81 are formed on one of the first component member 100A and the second component member 100B (see FIGS. 17 and 18). , 81 are inserted into the holes 81h (see FIG. 16), so that the terminal portion 81 is disposed at a predetermined position with respect to the stationary portion 100. Further, in the illustrated example, the terminal portions 81 and 81 have a concave portion 81b formed on the side portion, and the concave portion 81b engages with the convex portion 100B1 formed on the second component member 100B, thereby the terminal portion 81. , 81 are positioned on the second component member 100B.
  • the voice coil 30 is formed in a flat plate shape with an annular conductive member, and this conductive member is supported by a rigid base (voice coil support portion 40).
  • the voice coil 30 or the voice coil support portion 40 is unitized by the mounting unit 16 and is mounted between the first component member 100A and the second component member 100B. Further, the voice coil 30 or the voice coil support portion 40 is attached to the attachment unit 16 via the holding portion 15, and the attachment unit 16 is attached between the first component member 100A and the second component member 100B.
  • the voice coil 30 or the voice coil support part 40 is held by the stationary part 100 via the holding part 15. Further, a connecting portion 60 is integrated with the mounting unit 16, and the voice coil 30 or the voice coil support portion 40 and the vibration direction changing portion 50 are connected via the connecting portion 60.
  • a voice coil lead wire 32 (see FIGS. 13 and 20) connected to the lead wire 31 is formed on the voice coil support portion 40 (base body) that supports the voice coil 30.
  • the voice coil lead wire 32 is a conductive layer 43 patterned on the voice coil support portion 40 (base) so as to surround the conductive member of the voice coil 30, and the voice coil lead wire 32 is a conductive member of the voice coil 30.
  • the holding part 15 are electrically connected.
  • the holding portion 15 is formed with wiring (third wiring 80C) for electrically connecting the voice coil 30 and the terminal portion 81, and ends of the terminal portions 81 and 81 and wiring (third wiring 80C). Are electrically connected, the wiring of the holding portion 15 (third wiring 80C) and the voice coil lead wire 32 are connected, and the wiring 82 (second wiring 80B) is connected to the terminal portions 81 and 81. Thus, a voice signal is input to the voice coil 30 from the outside.
  • This wiring (third wiring 80C) can be formed by using the holding portion 15 as a conductive member. Further, a separate wiring can be formed in the holding portion 15.
  • the holding part 15 itself can also be formed using a wiring board. As for the connection between the wiring 82 (second wiring 80B) and the terminal portions 81 and 81, the end portion 82a of the wiring 82 and the connection portion 81a of the terminal portions 81 and 81 are electrically connected.
  • the holding unit 15 is rigid in the vibration direction of the diaphragm 10 and has a shape that can be deformed in the vibration direction of the voice coil 30.
  • the holding unit 15 has a side surface extending linearly along the vibration direction (X-axis direction) of the diaphragm 10 and has a curved cross-sectional shape in the vibration direction of the voice coil 30. . Accordingly, the holding unit 15 restricts the vibration of the voice coil 30 in one axial direction (X-axis direction), and the vibration in the other direction of the voice coil 30 is suppressed.
  • FIG. 4A is a perspective view showing a single component 15 1 , 15 2
  • FIG. 4B is a side view of the holding portion 15
  • FIG. 4C is a plan view thereof.
  • the constituent member 15 1 (15 2 ) of the holding portion 15 is in contact with each other at the flat plate portion F, includes the first curved portion W and the second curved portion Wa, includes the flat plate portions F and F at both ends, and Connection portions F1 and F2 are provided in a direction perpendicular to the flat plate portion F.
  • the plurality of constituent members 15 1 and 15 2 are conductive metal members and are joined by welding.
  • the plate members F are faced to each other and spot welding is performed thereon, thereby welding the constituent members 15 1 and 15 2 .
  • spot welding is performed at a plurality of locations in each of the flat plate portions F and F at both ends (symbol s is a spot weld location).
  • the connecting portion F1 of the holding portion 15 with the terminal portions 81 and 81 extends in a direction intersecting with the vibration direction (Z-axis direction) of the diaphragm 10, and is in a flat plate shape so as to contact the terminal portions 81 and 81. Is formed.
  • the connecting portion F2 with the voice coil lead wire 32 of the holding portion 15 also extends in a direction intersecting with the vibration direction (Z-axis direction) of the diaphragm 10 and abuts on the end portion of the whistle coil lead wire 43. It is formed in a flat plate shape.
  • FIG. 22 is an explanatory diagram showing a method of feeding power to the voice coil.
  • an audio signal is supplied to the voice coils 30 and 30 by the method shown in FIG.
  • a plurality of voice coils 30 and 30 and a signal supply source (external) SV are connected in parallel. That is, both ends of the plurality of voice coils 30 and 30 are connected to each other by the third wiring 80C formed by the voice coil lead wire 32 and the holding portion 15 and the first wiring 80A in the terminal portion 81.
  • the other end of the wiring 82 (second wiring 80B) whose one end is connected to the signal supply source (external) SV is connected to the wiring 80A.
  • the linear portions 30a1 and 30a2 of the voice coils 30 and 30 are arranged in a magnetic gap that forms a magnetic flux in one direction intersecting with the direction in which the current flows (for example, downward with respect to the drawing sheet),
  • the voice coils 30 and 30 Driving forces f1 and f2 that are opposite to each other are generated to operate the vibration direction converter 50 (not shown in FIG. 22).
  • +/ ⁇ shown in the figure may be in the opposite direction.
  • the driving forces f1 and f2 act in the opposite directions to the arrows shown in the figure.
  • a plurality of voice coils 30 and 30 and a signal supply source (external) SV are connected in series. That is, one end portions of the plurality of voice coils 30 and 30 are connected to each other by the third wiring 80 ⁇ / b> C formed by the voice coil lead wire 32 and the holding portion 15 and the first wiring 80 ⁇ / b> A in the terminal portion 81. The other end portions of the voice coils 30 and 30 are connected to each other between paths connected by the voice coil lead wire 32 and the third wiring 80C formed by the holding portion 15 and the first wiring 80A1 and 80A2 in the terminal portion 81.
  • the signal supply source SV is connected.
  • the wiring formed in the terminal portions 81 and 81 has the first wiring 80A in which one terminal portion 81 is continuous, and the wirings 80A1 and 80A2 in which the other terminal portion 81 is divided.
  • the signal supply source SV is connected via the wiring 82 between the wirings 80A1 and 80A2.
  • the audio signal is supplied so that one of the wirings 82 (second wiring 80B) connected to the signal supply source SV is + and the other is-as shown.
  • a current flows through the straight portions 30a1, 30b1, 30a2, and 30b2 of the voice coils 30 and 30 as in FIG. 22A, and the respective straight portions are arranged in the magnetic gap as in FIG.
  • driving forces f1 and f2 in opposite directions are generated in the voice coils 30 and 30 as shown in the figure.
  • the current due to the audio signal may be in the opposite direction of +/-, but in this case, the driving forces f1 and f2 act in the opposite directions to the arrows in the drawing.
  • FIG. 23 and FIG. 24 are explanatory diagrams showing other examples of a power feeding method to the voice coil.
  • the example shown here is an example in which audio signals are supplied to the plurality of voice coils 30, 30 without going through the holding unit 15, and here, a plurality of wirings (third wiring 80 ⁇ / b> C) along the vibration direction conversion unit 50. ) And the ends of the pair of voice coil lead wires 32, 32 drawn from one voice coil 30 are connected to one end side of the plurality of wirings (third wiring 80C), and a plurality of wirings (first wirings) are connected. The ends of a pair of voice coil lead wires 32 and 32 drawn from the other voice coil 30 are connected to the other end of one wiring 80A).
  • the middle of the first wiring 80A is connected to one end of a wiring (third wiring 80C) provided on the bottom surface portion 107 of the second component 100B, and the other end of the wiring (third wiring 80C).
  • a wiring 82 connected to the signal supply source SV is connected to the part via a terminal part 81.
  • a third wiring 80C that electrically connects the voice coil 30 and the terminal portions 81 and 81 is provided, and the third wiring 80C is a vibration direction corresponding to the stationary portion 100 (bottom surface portion 107) and the voice coil 30. It is formed in the conversion unit 50.
  • the vibration direction conversion unit 50 includes first link portions 51A (R) and (L) whose both ends are connected to the voice coil 30 and the diaphragm 10 directly or via other members so that the angle can be changed.
  • a second link portion that is obliquely arranged with respect to the first link portions 51A (R) and (L) and is disposed between the first link portions 51A (R) and (L) and the stationary portion 100.
  • the stationary portion 100 includes a bottom surface portion 107 that supports the second link portion 51B, and a third wiring 80C is formed on the surface facing the second link portions 51B (R) and (L). Yes.
  • the third wiring 80C formed along the vibration direction conversion unit 50 is formed via joint portions 52A, 52C, and 52D of the vibration direction conversion unit 50.
  • the third wiring 80C is slackened and bent at a portion facing the joint portions 52A, 52C, 52D. Or it forms in the shape which can be refracted.
  • the third wiring 80C may be formed of a conductive layer, or may be formed of a conductive line such as a flat mesh line or a round or flat rhombus type cross section.
  • FIG. 25 and FIG. 26 are explanatory diagrams showing other examples of a method for feeding power to the whistle coil.
  • the third wiring 80 ⁇ / b> C is formed along the vibration direction converter 50.
  • a pair of third wirings 80C are provided along the back side of the link portions 51A (R, L), 51B (R, L), 53C and the connecting portions 53A (R, L). Is forming.
  • the third wiring 80C includes one of the link portions 51A (R, L), 51B (R, L), and 53C and the connecting portion 53A (R, L).
  • the other line is formed along the surface side, and the other line passes from the surface side of the connecting portion 53A (R) to the back side of the link portion 51A (R) through the surface side of the link portion 51A (R), and the link portion 53B. From the back surface side of the link portion 51A (L), the back surface side of the link portion 51A (L) is routed to the surface side of the link portion 51A (L) and is formed via the connecting portion 53A (L).
  • FIG. 26 is an explanatory diagram showing a wiring structure when the third wiring 80C is routed through the back side of the link portion as shown in FIG. 25 (a).
  • a branch connection portion 80C1 is formed on the back surface of the connecting portion 53C joined to the stationary portion 100 of the vibration direction converting portion 50, and one end of the wiring formed on the stationary portion 100 is a branch connection portion.
  • the other end of the wiring formed on the stationary part 100 is connected to the terminal part 81. Even with such a wiring structure, an audio signal can be supplied from the terminal portion 81 to the voice coils 30 and 30 via the third wiring 80C.
  • the connection between the voice coil lead line 32 and the third wiring 80C is as follows. This is performed via the connecting unit 60.
  • the end of the voice coil lead line 32 and the end of the third wiring 80 ⁇ / b> C are electrically connected by, for example, incorporating a wiring in the connecting portion 60.
  • the plurality of voice coils 30 and 30 vibrate in directions opposite to each other, and the winding start of the conducting wire is provided inside the voice coil 30 so as to be conductive.
  • the case where the end of winding is provided outside the voice coil 30 is shown.
  • the direction of the magnetic flux passing through the magnetic gap 20G formed on the vibration direction conversion unit 50 side is set in a direction from the lower side to the upper side of the paper surface, and passes through the magnetic gap 20G formed on the stationary unit 100 side.
  • the direction of the magnetic flux to be set is set to the direction from the upper side to the lower side of the paper.
  • the direction of the magnetic flux passing through the magnetic gap 20G may be changed depending on the input method of the audio signal, the winding method of the conductive wire of the voice coil 30, or the winding of the conductive wire of the voice coil 30 without changing the direction of the magnetic flux. You may change the way or change the input method of the audio signal.
  • FIGS. 11 and 12 are explanatory views showing a speaker device 1T according to an embodiment of the present invention
  • FIG. 27 is a plan view
  • FIG. 28 is a sectional view taken along line XX
  • FIG. 29 is a rear view
  • the example shown in FIGS. 11 and 12 is adopted as the vibration direction conversion unit 50.
  • the diaphragm 10 is formed in a rectangular shape viewed from the sound radiation direction, and has an elliptical outer shape in the vicinity of the center and a curved portion 10A having a concave cross-sectional shape.
  • a predetermined bending rigidity is provided in the vibration direction of the diaphragm 10 and the vibration direction of the voice coil 30.
  • the concave curved portion 10A in the diaphragm 10, the density in the curved portion 10A becomes larger than the density in a part of the other diaphragm 10, and the rigidity can be relatively increased.
  • the bending portion 10 ⁇ / b> A is formed between the pair of joint portions 52 ⁇ / b> B formed between the vibration direction conversion unit 50 and the diaphragm 10. ing.
  • the vibration plate 10 Since the vibration plate 10 has rigidity (including bending rigidity) in the vibration direction of the vibration plate 10, the occurrence of deflection of the vibration plate 10 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 10 ⁇ / b> A is formed on the diaphragm 10 between the pair of joint portions 52 ⁇ / b> B formed between the diaphragm 10 and the vibration direction converter vibration direction converter 50. Can be deterred.
  • the diaphragm 10 is formed in a substantially rectangular shape having a short axis along the vibration direction of the voice coil 30 and a long axis along a direction orthogonal to the vibration direction of the voice coil 30.
  • 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 vibration plate 10.
  • a filler such as a dumping agent (damping agent, braking material) may be applied (applied).
  • the rigidity (including bending rigidity) of the diaphragm 10 can be improved, and the peak dip of the speaker sound pressure frequency characteristic 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 10 can be improved by making the reinforcing part a fiber-based member, and when the diaphragm 10 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 10.
  • the internal loss of the diaphragm 10 can be improved by providing the reinforcing portion.
  • the diaphragm 10 is formed of a first layer made of a foamed resin made of an acrylic resin or the like and a second layer made of a fiber-based member such as glass fiber, and the first layer is It has a laminated structure sandwiched between a pair of second layers.
  • a material for forming the diaphragm 10 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 11 that supports the vibration plate 10 on the frame 12 that is the stationary portion 100 so as to freely vibrate is disposed between the vibration plate 10 and the frame 12, and an inner peripheral portion thereof supports an outer peripheral portion of the vibration plate 10, The outer peripheral portion is joined to the frame 12 directly or via another member, thereby holding the diaphragm 10 in 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 11 supports the diaphragm 10 so as to freely vibrate along the vibration direction (Z-axis direction) and brakes in a direction orthogonal to the vibration direction (Y-axis direction).
  • the edge 11 is formed in a ring shape (annular shape) as viewed from the acoustic radiation direction, and the cross-sectional shape thereof is 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 11 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 specified shape may be used. it can.
  • a projection or a concave shape that protrudes toward the front surface (surface on the acoustic radiation side) or the back surface (surface on the opposite side to the acoustic radiation side) is formed on a part or the entire circumference of the edge 11, and the edge
  • the rigidity in the 11 prescribed directions may be improved.
  • the stationary part 100 is divided into a first frame 12B (first constituent member 100A) and a second frame 12C (second constituent member 100B), and the diaphragm 10 has an edge 11 at the central opening of the first frame 12B. Is supported through.
  • the magnetic circuit 20 is structured to be separable into a part arranged on the upper side with the voice coil 30 interposed therebetween and another part arranged on the lower side, and the upper part is supported by the first frame 12B.
  • the other part on the lower side is supported by the second frame 12C.
  • the upper yoke portion 22B is supported so as to be substantially parallel to the first frame 12B
  • the lower yoke portion 22A is substantially parallel to the second frame 12C.
  • the stationary portion 100 includes an outer peripheral frame portion 101 that surrounds the diaphragm 10 and a bridging portion 102 that bridges the inside of the outer peripheral frame portion 101.
  • the bridging portion 102 is connected to the link mechanism 50L (vibration direction converting portion 50) described above. A reaction force is applied and rigidity is provided in the vibration direction of the link mechanism 50L.
  • the link mechanism 50L that converts the angle of the link portion 51 is counteracted by the vibration from the diaphragm 10. Receive power.
  • the link mechanism 50L receives such a reaction force, the link mechanism 50L itself vibrates when the stationary portion 100 supporting the link mechanism 50L bends, and the link mechanism 50L transmits unnecessary vibration to the link portion 51. Will do. If unnecessary vibration transmitted to the link portion 51 is transmitted to the diaphragm 10, the vibration of the voice coil 30 cannot be efficiently transmitted to the diaphragm 10.
  • the compliance of the outer peripheral frame portion 101 is prevented.
  • 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 10 or the magnetic circuit 20.
  • the bridging portion 102 provided in the second frame 12C is formed with a first protruding portion 102A that protrudes in the extending direction and the vibration direction of the diaphragm 10.
  • the first protruding portion 102A has a rib structure formed along the longitudinal direction of the bridging portion 102, thereby increasing the bending rigidity of the bridging portion 102.
  • a second projecting portion 102 ⁇ / b> B extending in a direction intersecting with the first projecting portion 102 ⁇ / b> A is formed in the plane of the bridging portion 102 facing the diaphragm 10.
  • This 2nd protrusion part 102B becomes a reinforcement rib in the both ends of the bridge part 102, and the bridge part 102 is rigidly supported by the outer periphery frame part 101 at the both ends.
  • the bridging portion 102 has a third protrusion 102C extending in a direction intersecting the first protrusion 102A and the second protrusion 102B in the plane of the stationary portion 100 facing the diaphragm 10.
  • the reinforcement part 103 having a polygonal planar shape is formed by the plurality of second protrusions 102B and the third protrusions 102C.
  • the first frame 12B has the outer peripheral frame portion 101 of the stationary portion 100 as the first outer peripheral frame portion 101A, and the second outer peripheral portion 101B that supports the diaphragm 10 inside the first outer peripheral frame portion 101A. Prepare. The opening inside the second outer peripheral frame portion 101 ⁇ / b> B is blocked by the edge 11 and the diaphragm 10. On the second outer peripheral frame portion 101B where the diaphragm 10 is supported via the edge 11, a protruding portion 101B1 protruding toward the acoustic radiation direction is formed. The protrusion 101B1 obtains rigidity for supporting the periphery of the diaphragm 10.
  • the first frame 12B and the second frame 12C serving as 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 frame 12B, and concave portions 100n are formed at the four corners of the second frame 12C.
  • the convex portions 100m and the concave portions 100n are fitted, and the first frame 12B and the second frame 12C is coupled.
  • the convex portion 100m may be formed on one of the first frame 12B and the second frame 12C, and the concave portion 100n may be formed on the other of the first frame 12B and the second frame 12C.
  • the recess 100n may be formed as a hole.
  • the vibration direction converter 50 includes a first link portion 51A and a second link portion 51B as a link mechanism 50L, one end of the second link portion 51B is supported by the first link portion 51A, and the other end is Supported by the bridge 102.
  • the bridging portion 102 that supports the second link portion 51B is formed in a flat plate shape, and the connecting portion 104 that connects the other end of the second link portion 51B and the bridging portion 102 forms a single plane. ing.
  • the other end of the second link portion 51B is engaged with the bridging portion 102, so that the vibration direction changing portion 50 and the bridging portion 102 are connected.
  • a protruding portion 104A is formed on the connecting portion 104 of the bridging portion 102, and the protruding portion 104A is inserted into a connecting portion 53C formed integrally with the end portion of the second link portion 51B via the joint portion 52.
  • a hole 104B is formed.
  • the protruding portion 104A of the connecting portion 104 in the bridging portion 102 is a positioning portion that determines the position of the vibration direction changing portion 50 with respect to the stationary portion 100.
  • the protrusion 104A is inserted into the hole 104B of the connecting portion 53C that is integrally formed with the end portion of the second link portion 51B via the joint portion 52, so that the vibration direction changing portion 50 is moved with respect to the stationary portion 100. Positioning.
  • the second coupling portion 53B of the vibration direction changing unit 50 is coupled to the back surface of the diaphragm 10 supported by the first frame 12B.
  • An immovable connecting portion 53C of the vibration direction changing portion 50 is connected to a connecting portion 104 formed at the central portion of the bridging portion 102 in the second frame 12C.
  • the second connecting portion 53B is a portion integrated with the end portion of the first link portion 51A via the joint portion 52B.
  • the end of one link portion 51 ⁇ / b> A and the diaphragm 10 are connected.
  • a concave portion is formed on the surface of the diaphragm 10 facing the second coupling portion 53B on the acoustic radiation side, and the diaphragm 10 has rigidity.
  • the immovable connecting portion 53C is a portion integrated with the end of the second link portion 51B via a joint portion 52D, and a hole 104B is formed in the connecting portion 53C.
  • the protrusion 104A of the connecting portion 104 is inserted, and the connecting portion 104 and the end of the second link portion 51B are connected.
  • the voice coil support portion 40 on which the voice coil 30 is supported has a connection portion 60 attached to one end in the vibration direction, and the connection portion 60 is attached so as to extend along the width of the voice coil support portion 40.
  • the connection portion 60 is formed with a connection step portion 60s to which the first connection portion 53A of the vibration direction conversion portion 50 is detachably connected, and a through-hole penetrating along the vibration direction of the voice coil support portion 40. 60p is formed.
  • the through hole 60p is a vent hole formed to reduce the air resistance acting on the connecting part 60 against the vibration of the voice coil support part 40.
  • the connecting portion 60 connects the first connecting portion 53A of the vibration direction converting portion 50 and the end portion of the voice coil support portion 40 with a space therebetween, and thereby within the height of the vibration direction converting portion 50.
  • the height of the magnetic circuit 20 is adjusted.
  • the voice coil support part 40 and the connecting part 60 are held by the holding part 15 on the first frame 12B and the second frame 12C.
  • the holding unit 15 includes a first holding unit 15A and a second holding unit made of a curved plate member that allows deformation in one direction along the vibration direction of the voice coil support unit 40 and restricts deformation in the other direction. Part 15B.
  • the first holding portion 15A and the second holding portion 15B hold the voice coil support portion 40 on the first frame 12B and the second frame 12C via the mounting unit 16.
  • the first holding portion 15A is made of a conductive metal, and is electrically connected via a lead wire 31 drawn from the end of the voice coil 30 and a voice coil lead wire 32 (conductive layer 43). An audio signal is supplied to the voice coil 30 via the first holding unit 15A. Further, the first holding portion 15A is electrically connected to the linear terminal portions 81 and 81 supported by the frame 12, and the wiring 82 and the wiring 82 that are electrically connected to the terminal portions 81 and 81, respectively. And electrically connected to the outside.
  • the center portion of the second holding portion 15B is connected to the other side portion of the mounting unit 16, and both ends thereof are connected to the left and right ends of the voice coil support portion 40.
  • the second holding portion 15 ⁇ / b> B is arranged within the width of the voice coil support portion 40 so that the holding mechanism of the voice coil support portion 40 is not bulky in the width direction of the whistle coil support portion 40.
  • the second holding portion 15B is formed of a continuous member, the second holding portion 15B has a continuous shape even in the central portion, but may be formed of a plurality of members and is not particularly limited. Note that a part of the second holding portion 15B is disposed so as to protrude outward from the stationary portion 100. However, the second retaining portion 15B is not limited thereto, and may be changed so as to be accommodated in the stationary portion 100.
  • the voice coils 30 and 30 In order to input voice signals to the voice coils 30 and 30 corresponding to the plurality of driving units 14, the voice coils 30 and 30 extend from one voice coil 30 toward the other voice coil 30, A pair of common terminal portions 81, 81 for the voice coils 30, 30 are provided on the stationary portion 100.
  • the terminal portions 81 and 81 are arranged inside an opening (not shown) formed between the first frame 12B and the second frame 12C constituting the frame 12 which is the stationary portion 100. Has been. For this reason, compared with the case where the terminal portions are provided at one end and the other end of each voice coil 30, the arrangement of the terminal portions can be saved, and the speaker device can be reduced in size or thickness.
  • terminal parts 81 and 81 can be stably fixed to the stationary part 100, and poor connection with the voice coils 30 and 30 can be avoided.
  • the terminal portions 81 and 81 are formed in a shape having a long axis extending from one voice coil 30 to the other voice coil 30 and a short axis intersecting the long axis. Thus, by making it elongate shape, the efficiency of installation space can be improved.
  • the terminal portions 81 and 81 are formed with connection portions 81a for wirings 82 and 82 (second wiring) electrically connected to the outside, and are electrically connected to the terminal portions 81 and 81 at the connection portion 81a.
  • the wiring 82 (second wiring) is fixed to the side surface of the stationary portion 100 and is connected to the terminal portions 81 and 81.
  • the outer peripheral frame portion 101 of the stationary portion 100 includes a side surface to which the wiring 82 is attached.
  • Guide portions 106 and 106 that guide the wiring 82 are formed on the side surface of the stationary portion 100.
  • a voice coil lead wire 32 (conductive layer 43) connected to a lead wire 31 drawn from the end of the voice coil 30 is formed on the voice coil support portion 40 (base) that supports the voice coil 30. ing.
  • the conductive layer 43 is patterned on the voice coil support portion 40 (base body) so as to surround the conductive member of the voice coil 30, and the conductive layer 43 electrically connects the conductive member of the voice coil 30 and the holding portion 15. is doing.
  • the holding portion 15 is formed with wiring for electrically connecting the voice coil 30 and the terminal portion 81, and the end portions of the terminal portions 81 and 81 are electrically connected with the wiring of the holding portion 15. And the voice coil lead line are connected, and the wiring 82 is connected to the terminal portions 81, 81, whereby a voice signal is input to the voice coil 30 from the outside.
  • connection part F1 connected to the terminal parts 81 and 81 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 10 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 connected to the voice coil lead wire 32, extends in a direction intersecting with the vibration direction (Z-axis direction) of the diaphragm 10, and the voice coil lead wire 32. It is formed in a flat plate shape so as to come into contact with the end of the plate.
  • the attachment unit 16 includes a first connection portion 16a to which the end portion of the first holding portion 15A is connected on both the left and right sides of the connecting portion 60, and a second connection portion to which the second holding portion 15B is connected.
  • 16b is provided behind the voice coil support portion 40, and has an integrated support portion 16c that integrally supports the first connection portion 16a and the second connection portion 16b.
  • the four corners of the mounting unit 16 are provided with connection hole portions 16d facing the convex portions 100m provided in the first frame 12B of the stationary portion 100.
  • the unit 16 is integrated, and an upper yoke portion 22B and a lower yoke portion 22A of the magnetic circuit 20 are respectively disposed above and below these (voice coil support portion 40 and the like), and the first frame 12B of the stationary portion 100
  • the second frame 12C is sandwiched.
  • the immovable connecting portion 53C of the vibration direction changing portion 50 is fitted to the support base 12D formed on the bottom portion 12A of the second frame 12C and is immovably supported, and other components such as the mounting unit 16 are also first. It is positioned at a predetermined position with respect to the first frame 12B and the second frame 12C. Further, by inserting the convex portions 100 m included in the first frame 12 ⁇ / b> B of the stationary portion 100 into the connection hole portions 16 d provided at the four corners of the mounting unit 16, the stationary portion 100 is fixed at a predetermined position.
  • the yoke portion 22B on the upper side of the magnetic circuit 20 is first assembled with respect to the inner surface of the first frame 12B, and then the mounting unit 16, the vibration direction converting portion 50, etc. are sequentially assembled and positioned, and The second frame 12C is overlapped to sandwich each component, and the lower yoke portion 22A of the magnetic circuit 20 is incorporated. Finally, the second connecting portion 53B of the vibration direction changing portion 50 and the diaphragm 10 are joined with an adhesive as a joining member, and the outer peripheral portion of the diaphragm 10 is connected to the first frame 12B via the edge 11. To the second outer frame portion 101B.
  • a groove is formed in the bottom portion of the second outer frame portion 101B to accommodate the protrusion of the adhesive using the edge 11 and the first frame 12B as a joining member. It is formed as a joining member accommodating part. Further, by forming a projecting portion that projects the outer peripheral portion of the edge 11 toward the frame 12B and allowing the projecting portion to enter the groove portion, the bonding force between the edge 11 and the first frame 12B can be improved.
  • the assembly process may be as follows. First, the wiring 82 is connected to the connection terminals 81, 81, and the magnet 21 is joined to the yoke portion 22. Next, the connection terminals 81 and 81 to which the wiring 82 is connected are attached to the outer peripheral frame portion 101A of the first frame 12B. Next, the pair of attachment units 16 to which the above-described voice coil 30 is attached are attached to the first frame 12B. At this time, the connection terminals 81, 81 and the holding portion 15A attached to the attachment unit 16 are electrically connected using solder or the like. Next, the vibration direction conversion unit 50 is attached to the connecting unit 104 and the vibration direction conversion unit 50 and the voice coil 30 are connected.
  • the second frame 12C is disposed on the first frame 12B, and a magnetic pole member (yoke part) 22 having a magnet 21 bonded thereto is attached to the outer peripheral frame part 101A of the second frame 12C.
  • the diaphragm 10 and the edge 11 are attached to the second outer peripheral frame portion 101B of the first frame 12B.
  • a magnetic pole member (yoke part) 22 in which a magnet 21 is joined is attached to the first outer peripheral frame part 101A of the first frame 12B.
  • the wiring 82 is attached to the guide portion 106 provided in the first outer peripheral frame portion 101A of the first frame 12B.
  • the frame 12 serving as the stationary part 100 includes the first frame (first constituent member) 12B and the second frame (second constituent member) 12C, and the first frame 12B is the sound of the speaker device 1T.
  • the second frame 12C is disposed on the side opposite to the acoustic radiation side (back side).
  • the drive unit 14 of the speaker device 1 is supported so as to be sandwiched between the first frame 12B and the second frame 12C.
  • the outer peripheral frame portion 101 formed in an annular shape included in the first frame 12B supports one side (22B) of the magnetic pole member (yoke portion) 22 of the magnetic circuit 20.
  • the second frame 12C includes an outer peripheral frame portion 101 and a bridging portion 102 and supports one side (22A) of the magnetic pole member (yoke portion) 22 of the magnetic circuit 20.
  • the first frame 12B and the second frame 12C include a concave receiving portion 105 that accommodates a part of the yoke portion 22.
  • a protrusion 22p is fitted into the receiving portion 105, and the yoke portion 22 is positioned in order to form an appropriate magnetic gap.
  • an opening 101S is formed between the outer peripheral frame portion 101 and the bridging portion 102 in the second frame 12C.
  • 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 30 is formed in the first frame 12B.
  • the excessive vibration suppression unit 108 protrudes into the movable region of the voice coil 30, and the excessive vibration of the voice coil 30 is suppressed when the voice coil support unit 40 hits the excessive vibration suppression unit 108.
  • a cutout portion 41f is formed in the base of the voice coil support portion 40, and a protruding portion of the excessive vibration suppression portion 108 is disposed in the cutout portion 41f (see FIG. 32).
  • the magnetic circuit 20 is mounted on the first frame 12B and the second frame 12C with the magnetic pole member 22 joined to the magnet.
  • the magnetic pole member 22 includes a plurality of protrusions 22p, and the protrusions 22p are supported by the receiving portion 105.
  • the yoke portion 22, which is a plate-like magnetic body, has a width that decreases from the vibration direction changing portion 50 to the stationary portion 100, thereby preventing the holding portion 15 from contacting the yoke portion 22. .
  • the yoke portions 22A and 22B are attached to the first frame 12B and the second frame 12C, and the first frame 12B and the second frame 12C are coupled to each other, so that the yoke 21A and 22B are coupled to each other or the magnet 21. Is provided with a gap as a magnetic gap 20G.
  • FIG. 31 is an explanatory diagram for explaining the connection between the holding unit 15 and the attachment unit 16.
  • the second holding portion 15B which is an integral part, and the attachment unit 16 are connected via an adhesive resin.
  • the flat plate portions F, F at the left and right ends of the second holding portion 15B are connected to the connecting portions 40g, 40g at the left and right ends of the edge 40f1 via connecting parts 40g1, 40g1 having holes 40g2, respectively.
  • the flat plate portion F at the center of 15B is coupled to the coupling end portion 16f1 of the attachment unit 16. Note that the edge 40f1 of the voice coil support 40 on the side opposite to the vibration direction changer side of the voice coil support 40 is formed in a concave shape on the voice coil 30 side.
  • the voice coil support portion 40 is formed in a planar shape that can prevent the coil support portion 40 from vibrating and coming into contact with the mounting unit 16. Specifically, a relatively large gap is formed between the connecting end portion 16f1 of the mounting unit 16 and the end edge 40f1 of the voice coil support portion 40, and the flat portion F side on the left and right ends of the second holding portion 15B. As it moves to, it becomes the planar shape which protrudes toward the 2nd holding
  • the flat portions F at the left and right ends of the second holding portion 15B are formed with holes into which the connecting portions 40g at the left and right ends of the other side edge 40f1 of the voice coil support portion 40 are inserted.
  • FIG. 32 is an enlarged view showing an electrical connection structure of the holding portion.
  • FIG. 4A shows in detail that one connection surface F2 of the first holding portion 15A is connected to the connection terminal portion 42 of the voice coil lead wire 32 (conductive layer).
  • FIG. 2B shows in detail the other connecting surface F1 of the first holding portion 15A connected to the terminal portion 81.
  • the first holding portion 15 ⁇ / b> A has a connection surface F ⁇ b> 1 on one end side connected to the terminal portion 81, and a connection surface F ⁇ b> 2 on the other end side connected to the connection terminal 42 of the voice coil lead wire 32.
  • the terminal portion 81 electrically connects one end side of the pair of first holding portions 15A to the wiring 82 (external), and an audio signal input from the wiring 82 passes through the terminal portion 81 and the first holding portion 15A.
  • the terminal portion 81 is a rod-shaped conductive member, and a positioning hole is formed. By positioning a positioning projection 111 provided on the stationary portion 100 into the positioning hole, the terminal portion 81 is positioned at a specific location in the stationary portion 100.
  • the terminal portion 81 is configured by a member (insulating member) having insulation properties such as a resin member, and a conductive member is provided on the insulating member, and is electrically connected to the connection surface F 1 of the holding portion 15. It doesn't matter.
  • the height of the magnetic circuit 20 is almost the entire height of the entire apparatus, and the voice coil support portion 40 vibrates in the vicinity of the center of the magnetic circuit 20. And the end portion of the vibration direction changing portion 50 are connected to each other at different heights via the connecting portion 60.
  • each link portion of the vibration direction conversion unit 50 can ensure a sufficient length within the height of the device, and a part of the height of the magnetic circuit 20 is set to the height of the vibration direction conversion unit 50. It is possible to fit in.
  • a gap is formed between the first frame 12B and the upper yoke portion 22B disposed in the vicinity of the first frame 12B, the vibration of the diaphragm 10 is transmitted via the upper yoke portion 22B. Propagation to the magnetic circuit 20 is prevented from inducing contact between the magnetic circuit 20 and the voice coil 30.
  • the speaker device according to the embodiment or examples 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. 33 is an explanatory diagram showing an electronic apparatus including the speaker device according to the embodiment of the present invention.
  • the electronic device 2 such as the mobile phone or the portable information terminal shown in FIG. 5A, or the electronic device 3 such as the 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 member to be attached to the electronic device, the thickness space necessary for installing the speaker device 1 can be reduced. The overall thickness can be reduced. In addition, sufficient audio output can be obtained even in a thin electronic device.
  • FIG. 34 is an explanatory view showing an automobile provided with a speaker according to an embodiment of the present invention.
  • the space in the vehicle 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.
  • a hotel, inn or training that can accommodate a large number of people, such as a house (building) intended for the residence of people, a meeting, a lecture, a party, etc.
  • facilities, etc. buildings
  • the speaker device 1 when the speaker device 1 is installed on a wall or ceiling as a member to be attached, the thickness space required for the installation of the speaker device 1 can be reduced, so unnecessary space in the room can be deleted, Space can be used effectively.
  • projectors and large-screen TVs, etc. there have been examples of providing living rooms with audio / video equipment, while living rooms without audio / video equipment have been provided. In some cases, etc. are used as theater rooms.
  • the speaker device 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.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

Selon l'invention, pour obtenir un dispositif haut-parleur mince, des systèmes d'excitation comprenant des circuits magnétiques (20) et des bobines acoustiques (30) sont agencés dans le dispositif et une section à bornes (81) pour fournir des signaux audio aux bobines acoustiques des systèmes d'excitation respectifs est agencée de façon efficace. Une section d'excitation (14) pour exciter une plaque vibrante (10) comprend des bobines acoustiques (30) faites vibrer dans une direction différente de la direction de vibration de la plaque vibrante par un signal audio appliqué aux bobines acoustiques, des circuits magnétiques (20) ayant des entrefers magnétiques (20G) dans lesquels les bobines acoustiques sont agencées respectivement, et des sections de changement de direction de vibration rigides (50) fournies en correspondance aux bobines acoustiques de façon à être obliques par rapport à la direction de vibration des bobines acoustiques et à la direction de vibration de la plaque vibrante et transmettant une vibration des bobines acoustiques à la plaque vibrante. La section à bornes (81) commune aux bobines acoustiques et s'étendant d'une bobine acoustique à l'autre bobine acoustique est installée sur une section statique (100).
PCT/JP2009/062484 2009-07-09 2009-07-09 Dispositif haut-parleur Ceased WO2011004481A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/062484 WO2011004481A1 (fr) 2009-07-09 2009-07-09 Dispositif haut-parleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2009/062484 WO2011004481A1 (fr) 2009-07-09 2009-07-09 Dispositif haut-parleur

Publications (1)

Publication Number Publication Date
WO2011004481A1 true WO2011004481A1 (fr) 2011-01-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2009/062484 Ceased WO2011004481A1 (fr) 2009-07-09 2009-07-09 Dispositif haut-parleur

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Country Link
WO (1) WO2011004481A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484932U (fr) * 1977-11-26 1979-06-15
JPS57166492U (fr) * 1981-04-11 1982-10-20
JPS63250995A (ja) * 1987-04-07 1988-10-18 Citizen Watch Co Ltd 薄型スピ−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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484932U (fr) * 1977-11-26 1979-06-15
JPS57166492U (fr) * 1981-04-11 1982-10-20
JPS63250995A (ja) * 1987-04-07 1988-10-18 Citizen Watch Co Ltd 薄型スピ−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

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