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WO2025018224A1 - Sound outputting device - Google Patents

Sound outputting device Download PDF

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Publication number
WO2025018224A1
WO2025018224A1 PCT/JP2024/024772 JP2024024772W WO2025018224A1 WO 2025018224 A1 WO2025018224 A1 WO 2025018224A1 JP 2024024772 W JP2024024772 W JP 2024024772W WO 2025018224 A1 WO2025018224 A1 WO 2025018224A1
Authority
WO
WIPO (PCT)
Prior art keywords
case
frame
output device
diaphragm
coil
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.)
Pending
Application number
PCT/JP2024/024772
Other languages
French (fr)
Japanese (ja)
Inventor
智広 伊藤
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.)
Sony Group Corp
Original Assignee
Sony Group 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 Sony Group Corp filed Critical Sony Group Corp
Publication of WO2025018224A1 publication Critical patent/WO2025018224A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/22—Clamping rim of diaphragm or cone against seating
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil

Definitions

  • This technology relates to the technical field of audio output devices that output sound.
  • audio output devices that are worn on the head, such as the ears, as headphones or earphones, and sound is output from a speaker unit.
  • audio output devices have been increasingly used outdoors in addition to indoors.
  • Such audio output devices include so-called dynamic audio output devices that are provided with a speaker unit having a magnet, a coil, and a diaphragm, and sound is output by vibrating the diaphragm through a magnetic circuit (see, for example, Patent Documents 1, 2, and 3).
  • the outer periphery of the diaphragm is attached by a diaphragm ring to the outer periphery of a member called a frame, which has a magnet attached and also functions as a yoke, ensuring a stable attachment state of the diaphragm to the frame.
  • the outer shape of the part that comes into contact with the head is rounded, and it is desirable to place a speaker unit with the largest diameter possible within a limited space.
  • the presence of the diaphragm ring tends to make the acoustic output device larger.
  • the aim of the audio output device of this technology is to achieve miniaturization while ensuring a stable attachment state of the diaphragm to the frame.
  • the sound output device comprises a speaker unit having a ring-shaped magnet, a frame to which the magnet is attached, a coil to which a drive current is supplied, and a diaphragm to which the coil is attached, the diaphragm having a vibration part that vibrates integrally with the coil when sound is output, and a bending part that is continuous with the outer periphery of the vibration part and is bent toward the magnet with respect to the vibration part, and the bending part is provided with a joint that is joined to the outer periphery of the frame.
  • the diaphragm is attached to the frame by joining the joint provided at the bent portion bent toward the magnet side relative to the vibrating portion to the outer peripheral surface of the frame.
  • FIG. 1 shows an embodiment of a sound output device according to the present technology together with FIG. 2 to FIG. 14, and is a perspective view of the sound output device.
  • FIG. 2 is an exploded perspective view of the sound output device.
  • FIG. FIG. 4 is a cross-sectional view of the first case. 4 is a cross-sectional view showing a state in which the speaker unit is arranged in a unit arrangement space of the first case.
  • FIG. FIG. 2 is a cross-sectional view of the speaker unit. 4 is an enlarged cross-sectional view showing a state in which the diaphragm is attached to the frame.
  • FIG. 4 is an enlarged cross-sectional view showing a state in which an adhesive is applied to the outermost periphery of the diaphragm.
  • FIG. 4 is an enlarged cross-sectional view showing a state in which an adhesive is applied to the outermost periphery of the diaphragm.
  • FIG. 11 is a perspective view showing an arrangement state of a wiring board connected to a microphone with respect to a first case.
  • FIG. 4 is a cross-sectional view showing the arrangement of a wiring board connected to a microphone relative to a first case.
  • FIG. FIG. 4 is a side view showing an arrangement of wires drawn out from a coil. 13 and 14 show the steps for assembling the speaker unit, and this figure is a cross-sectional view showing the state in which the coil is attached to the diaphragm.
  • 4 is a cross-sectional view showing a state in which the diaphragm is assembled to the first case.
  • FIG. 4 is a cross-sectional view showing a state in which the diaphragm is attached to a frame.
  • the sound output device of the present technology is applied to headphones.
  • the scope of application of the present technology is not limited to headphones, and can be widely applied to various other sound output devices such as earphones.
  • the sound output device described below is equipped with a dynamic speaker unit that functions as an audio output section, and the speaker unit has a ring-shaped coil and magnet.
  • the axial direction of the coil is taken as the front-to-back direction, and the directions indicated are front-to-back, up-down, left-to-right.
  • the sound output devices 1 are used, for example, in a pair, one for the left ear and the other for the right ear. However, sound may be heard using a single sound output device 1.
  • the sound output device 1 has a housing 2 that serves as an outer case, and the necessary parts arranged inside the housing 2 (see Figures 1 and 2).
  • the housing 2 is constructed by joining a first case 3 and a second case 4 in the front-to-rear direction.
  • the first case 3 is integrally formed with a concave case section 5 that opens to the rear, a sound-guiding tubular section 6 that protrudes diagonally to the front side from the case section 5, a terminal protrusion 7 that protrudes upward from the rear end of the case section 5, and a protruding section 8 that protrudes to the side from the case section 5.
  • the entire outer surface of the case section 5 is formed into an outwardly convex curved surface.
  • the case section 5 is formed into a roughly circular shape when viewed from the front-to-rear direction, and the internal space is formed as a unit arrangement space 5a.
  • the sound-guiding tubular portion 6 is formed in a substantially cylindrical shape.
  • the internal space of the sound-guiding tubular portion 6 is formed as a sound-guiding space 6a, which is connected to the unit arrangement space 5a of the case portion 5.
  • the sound-guiding tubular portion 6 has a microphone arrangement portion 6b provided in the sound-guiding space 6a.
  • the terminal protrusion 7 has, for example, three terminal arrangement holes 7a formed therein.
  • a terminal board (not shown) on which three connection terminals are mounted is disposed on the rear side of the terminal protrusion 7, and the connection terminals are inserted and arranged in the terminal arrangement holes 7a.
  • the connection terminals are, for example, charging terminals, communication terminals, etc.
  • the protrusion 8 is formed in a shallow recess that opens to the rear.
  • the case 5 has a substantially annular peripheral surface 9 and a curved blocking portion 10 that is connected to the front end of the peripheral surface 9, and the sound-guiding tubular portion 6 is connected to the blocking portion 10.
  • the blocking portion 10 is formed in a substantially spherical shape that is gently convex toward the front.
  • a circular pressing surface 9a facing rearward is formed on the inner periphery of the peripheral portion 9 (see Figures 3 and 4).
  • the front portion of the inner periphery of the peripheral portion 9 is formed as a first peripheral surface 9b
  • the rear portion of the pressing surface 9a is formed as a second peripheral surface 9c, with the second peripheral surface 9c being positioned more radially outward than the first peripheral surface 9b.
  • the first peripheral surface 9b and the second peripheral surface 9c are gently inclined so that they are displaced outward as they move rearward.
  • a retaining groove 11 is formed on the inner surface of the case 5 in a portion spanning the peripheral surface 9 and the blocking portion 10, and the retaining groove 11 is formed at a position that runs from a part of the peripheral surface 9 through the blocking portion 10 toward the sound-guiding tubular portion 6. Therefore, the position where the retaining groove 11 is formed on the peripheral surface 9 is a non-formed portion 9d where the pressing surface 9a, the first peripheral surface 9b, and the second peripheral surface 9c are not formed.
  • the second case 4 is integrally formed with a concave main body 12 that opens on the side opposite the first case 3 and a stem 13 that protrudes downward from the main body 12.
  • the main body 12 is made up of a first cover part 14 formed in a horizontally elongated shape and a second cover part 15 positioned above the first cover part 14.
  • the opening of the main body 12 is provided as a circumferential joint part 16 that is the same shape and size as the rear end part of the first case 3.
  • a battery (not shown) is placed inside the main body 12, and a microphone (not shown) that functions as a feedforward microphone is placed inside the stem 13.
  • the housing 2 is constructed by butting together the case portion 5 of the first case 3 and the circumferential joint portion 16 of the second case 4 (see Figure 1).
  • a speaker unit 17 is placed in the unit placement space 5a of the first case 3 (see Figure 5). Sound output from the speaker unit 17 passes through the sound-guiding space 6a of the sound-guiding tubular portion 6 and is radiated to the outside.
  • the speaker unit 17 is a dynamic type speaker unit, and has a frame 18, a magnet 19, a flat yoke 20, a holding member 21, a diaphragm 22, and a coil 23 (see Figures 5 and 6).
  • the frame 18 is made of a magnetic metal material and is integrally formed with a base plate portion 24 formed in a circular ring shape facing the front-to-rear direction, a circular connecting portion 25 protruding forward from the outer periphery of the base plate portion 24, a flange portion 26 protruding outward from the front end of the connecting portion 25, and a vertical wall portion 27 protruding forward from a position near the outer periphery of the flange portion 26.
  • the outer periphery of the flange portion 26 is formed with a surface facing forward on the outer periphery side of the vertical wall portion 27, and this surface is formed as a receiving surface 26a.
  • the outer periphery of the flange portion 26 is formed with a pull-out hole 26b.
  • the outer periphery surface 26c of the flange portion 26 is inclined so that it gradually displaces outward as it moves rearward.
  • the outer peripheral surface of the vertical wall portion 27 is formed as a gently inclined inclined surface 27a that displaces outward as it moves rearward.
  • the magnet 19 and the flat yoke 20 are both formed in an annular shape and are connected in the front-to-rear direction.
  • the flat yoke 20 is attached to the front surface of the magnet 19, and the rear surface of the magnet 19 is attached to the front surface of the base plate portion 24 of the frame 18.
  • the holding member 21 is made of a magnetic metal material and is formed in a generally cylindrical shape, and is inserted through the base plate portion 24 of the frame 18, the magnet 19, and the flat yoke 20, with its front end fixed to the flat yoke 20 and its rear end fixed to the base plate portion 24. Therefore, in the speaker unit 17, the frame 18, the magnet 19, and the flat yoke 20 are joined and held in close contact with each other in the front-to-rear direction by the holding member 21.
  • a gap 28 is formed as a predetermined space between the inner circumferential surface of the connecting portion 25 of the frame 18 and the outer circumferential surfaces of the magnet 19 and flat yoke 20.
  • the diaphragm 22 has a vibration portion 29 that vibrates when sound is output, and a bent portion 30 that is bent toward the magnet 19 relative to the vibration portion 29.
  • the vibration part 29 consists of a dome part 31 formed in a roughly spherical shape that is convex forward, and a ring-shaped outer peripheral part 32 that is continuous with the outer periphery of the dome part 31.
  • the front end of the coil 23 is fixed by adhesive or the like to the rear surface of the boundary 29a between the dome portion 31 and the outer periphery 32 of the vibrating portion 29, and at least a portion of it is positioned in the gap 28.
  • the diaphragm 22 is attached, for example, by the step portion 34a to the receiving surface 26a of the frame 18 with adhesive 100 (see FIG. 7). At this time, the step portion 34a is pressed from the front by the pressing surface 9a of the first case 3 and pressed against the receiving surface 26a to be joined.
  • At least a portion of the outermost portion 34b is joined to the outer peripheral surface of the frame 18.
  • at least a portion of the outermost portion 34b may be sandwiched between the outer peripheral surface of the frame 18 and the inner peripheral surface of the peripheral portion 9 of the first case 3.
  • at least a portion of the outermost portion 34b may be glued to the outer peripheral surface of the frame 18.
  • the pressing surface 9a is formed on the first case 3
  • the receiving surface 26a is formed on the frame 18, and a step portion 34a is provided at the joint 34 of the diaphragm 22, and the step portion 34a is pressed by the pressing surface 9a and pressed against the receiving surface 26a.
  • the joint 34 is joined to the outer circumferential surface of the frame 18 while the step portion 34a is pressed against the frame 18 by the first case 3, so that a stable fixed state of the bent portion 30 to the frame 18 can be ensured.
  • the outer peripheral portion 34b is positioned such that the outer peripheral surface 26c of the flange portion 26 of the frame 18 and the second peripheral surface 9c of the peripheral portion 9 of the first case 3 face each other on both sides in the thickness direction, and instead of bonding the step portion 34a, adhesive 100 may be applied to the tip of the outer peripheral portion 34b (see FIG. 8).
  • adhesive 100 may be applied to the tip of the outer peripheral portion 34b (see FIG. 8).
  • the applied adhesive 100 wraps around between the outer peripheral portion 34b and the outer peripheral surface 26c of the frame 18 and also wraps around between the outer peripheral portion 34b and the second peripheral surface 9c of the peripheral portion 9, so that the outer peripheral portion 34b is bonded to both the frame 18 and the first case 3 at the same time.
  • the adhesive 100 when the adhesive 100 is applied between the step portion 34a and the receiving surface 26a, the adhesive 100 may be applied to the area spanning the outer peripheral surface 26c of the frame 18, the outermost peripheral portion 34b, and the second peripheral surface 9c of the peripheral portion 9.
  • a microphone 35 is attached and arranged in the microphone arrangement section 6b of the first case 3 (see FIG. 2).
  • the microphone 35 functions as a feedback microphone, and is a microphone for performing a noise canceling function together with the microphone that functions as the feedforward microphone described above.
  • the microphone 35 is mounted on one end of the wiring board 36 in the longitudinal direction, and a first reinforcing plate 37 is attached to one end of the wiring board 36 on the opposite side to the microphone 35.
  • a flexible printed wiring board is used as the wiring board 36.
  • the first reinforcing plate 37 reinforces the wiring board 36, and the microphone 35 is maintained in a stable mounting state on the wiring board 36.
  • the wiring board 36 is held in a state where all of its length except for both ends are inserted into the retaining groove 11 formed in the first case 3 (see Figures 9 and 10). By being inserted and held in the retaining groove 11, the wiring board 36 is positioned across the dome portion 31 and outer periphery 32 of the diaphragm 22.
  • a second reinforcing plate 38 is attached to a portion of the wiring board 36.
  • the second reinforcing plate 38 is attached to the same surface in the thickness direction of the wiring board 36 as the surface to which the first reinforcing plate 37 is attached. In other words, the second reinforcing plate 38 is attached to the surface of the wiring board 36 that faces the surface of the vibration section 29.
  • the second reinforcing plate 38 is disposed in the non-formed portion 9d of the peripheral portion 9 in the retaining groove 11. By disposing the second reinforcing plate 38 in the non-formed portion 9d, the rear surface of the second reinforcing plate 38 is positioned on approximately the same plane as the pressing surface 9a of the peripheral portion 9, and the rear surface of the second reinforcing plate 38 has the same function as the pressing surface 9a.
  • the step portion 34a of the vibration plate 22 is pressed against the receiving surface 26a while being pressed by the pressing surface 9a and the second reinforcing plate 38.
  • the wiring board 36 which is a flexible printed wiring board, is connected to the microphone 35, and the first case 3 has a holding groove 11 formed in a position facing the surface of the vibration section 29, and the wiring board 36 is held in a state where it is inserted into the holding groove 11.
  • the wiring board 36 is held in a state where it is inserted into the holding groove 11 positioned opposite the surface of the vibration part 29, it is possible to ensure that the wiring board 36 is held in a good state while ensuring the compactness of the sound output device 1.
  • a second reinforcing plate 38 is attached to the surface of the wiring board 36 that faces the surface of the vibration section 29, and a portion of the second reinforcing plate 38 is positioned next to the pressing surface 9a between the bent section 30 and the first case 3.
  • the second reinforcing plate 38 is attached to the same side of the wiring board 36 as the side to which the first reinforcing plate 37 is attached in the thickness direction, the work of attaching the first reinforcing plate 37 and the second reinforcing plate 38 to the wiring board 36 is easy, and it is possible to ensure a good seal between the diaphragm 22 and the first case 3 while improving workability.
  • the lead wire 39 is positioned along the inner circumferential surface of the bent portion 30 of the diaphragm 22, then bent in a curved shape and drawn out rearward.
  • the portion of the lead wire 39 that is along the inner circumferential surface of the bent portion 30 is provided as the first portion 39a, the curved bent portion is provided as the second portion 39b, and the straight portion drawn out rearward from the diaphragm 22 is provided as the third portion 39c.
  • the third portion 39c of the pull-out wire 39 is inserted into the pull-out hole 26b formed in the flange portion 26 of the frame 18 and pulled out rearward.
  • the lead wire 39 has a first portion 39a positioned circumferentially along the inner surface of the diaphragm 22 and a curved second portion 39b bent relative to the first portion 39a, and is inserted into the lead hole 26b of the frame 18.
  • the first portion 39a is positioned along the inner peripheral surface of the speaker unit 17, and the second portion 39b is bent in a curved shape and inserted into the pull-out hole 26b and pulled out, so that a load is not easily applied to the pull-out wire 39 during vibrations caused by the vibrating part 29 of the coil 23, and damage to the pull-out wire 39 can be prevented.
  • the case part 5 of the first case 3 and the main body part 12 of the second case 4 are joined and the ear pads 50 are attached to the sound-conducting tubular part 6 to form the sound output device 1.
  • the sound output device 1 is worn on the ear by inserting the ear pads 50 into the ear canal.
  • the sound output from the speaker unit 17 is released to the outside from the sound-conducting space 6a of the sound-conducting tubular part 6.
  • the diaphragm 22 is made of a resin film, such as polyethylene terephthalate, which is formed into a predetermined shape by a molding die (not shown) (see FIG. 12). At this time, as described above, the continuous portion 33 and the outermost peripheral portion 34b are gently inclined so that they are displaced outward as they move rearward.
  • a resin film such as polyethylene terephthalate
  • the coil 23 is attached to the diaphragm 22. At this time, the coil 23 is positioned based on the bent portion 30, each of which is gently inclined, and attached to the diaphragm 22, ensuring high positioning accuracy of the coil 23 relative to the diaphragm 22, and the central axis of the diaphragm 22 and the central axis of the coil 23 are aligned.
  • the diaphragm 22, with the coil 23 attached, is inserted into the first case 3 from the rear (see FIG. 13).
  • the continuous portion 33 is guided by the first peripheral surface 9b, the diaphragm 22 is positioned with high precision relative to the first case 3, and the central axis of the peripheral surface portion 9 in the first case 3 and the central axis of the diaphragm 22 are aligned.
  • the frame 18 is inserted into the first case 3 from behind (see FIG. 14).
  • the flange portion 26 of the frame 18 is inserted inside the bent portion 30 of the diaphragm 22.
  • the vertical wall portion 27 of the frame 18 is inserted inside the connecting portion 33 of the diaphragm 22, but because the outer peripheral surface of the vertical wall portion 27 is formed as an inclined surface 27a, the vertical wall portion 27 does not interfere with the connecting portion 33, and the frame 18 can be smoothly inserted into the first case 3.
  • the diaphragm 22 has a vibration section 29 that vibrates integrally with the coil 23 when sound is output, and a bending section 30 that is continuous with the outer periphery of the vibration section 29 and is bent toward the magnet 19 relative to the vibration section 29, and a joint section 34 is provided on the bending section 30 which is joined to the outer periphery of the frame 18.
  • the vibration plate 22 is attached to the frame 18 by joining the joint 34 provided on the bent portion 30, which is bent toward the magnet 19 side relative to the vibrating portion 29, to the outer peripheral surface of the frame 18, so that the sound output device 1 can be made smaller while ensuring a stable attachment state of the vibration plate 22 to the frame 18.
  • the diaphragm 22 is attached to the frame 18 without using a diaphragm ring, it is possible to place a speaker unit 17 with the largest diameter in a limited space, making it possible to miniaturize the sound output device 1 while ensuring that the nominal diameter of the speaker unit 17 is maximized.
  • the sound output device 1 by making the sound output device 1 smaller, it is possible to improve the ease of wearing the sound output device 1 on the ear and the convenience of carrying it around.
  • the present technology can be configured as follows.
  • a speaker unit includes an annular magnet, a frame to which the magnet is attached, a coil to which a driving current is supplied, and a diaphragm to which the coil is attached, the diaphragm has a vibration part which vibrates integrally with the coil when sound is output, and a bent part which is continuous with the outer periphery of the vibration part and is bent toward the magnet side with respect to the vibration part, the bent portion is provided with a joint portion that is joined to an outer peripheral surface of the frame.
  • a housing is provided to hold the speaker unit therein, the housing includes a first case having a sound guide space and a second case coupled to the first case;
  • the first case has a pressing surface formed thereon,
  • the frame is formed with a receiving surface,
  • the joint is provided with a step portion,
  • an outer circumferential surface of the frame and an inner circumferential surface of the first case are positioned opposite each other on both sides in a thickness direction of the tip end of the joint,
  • a microphone is disposed inside the first case, A wiring board, which is a flexible printed wiring board, is connected to the microphone, A holding groove is formed in the first case at a position facing a surface of the vibration section, The acoustic output device according to any one of (1) to (3), wherein the wiring board is held in a state where it is inserted into the holding groove.
  • the first case has a pressing surface formed thereon, a step portion is provided in the bent portion and is continuous with the joint portion and is pressed by the pressing surface; a reinforcing plate is attached to a surface of the wiring board facing a surface of the vibration portion; The sound output device according to (1), wherein a predetermined surface of the reinforcing plate is positioned next to the pressing surface between the bent portion and the first case.
  • the coil is connected to a power supply circuit by a lead wire, A drawing hole is formed on the outer periphery of the frame, the lead wire has a first portion positioned along the inner peripheral surface of the diaphragm in the circumferential direction and a curved second portion bent relative to the first portion,
  • the sound output device according to any one of (1) to (3), wherein the coil is inserted into the lead-out hole.

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

Abstract

The present invention comprises a speaker unit that includes a ring-shaped magnet, a frame on which the magnet is installed, a coil to which a drive current is supplied, and a vibrating plate on which the coil is installed. The vibrating plate includes a vibrating part that vibrates integrally with the coil during output of sound and a bent part that is connected to the outer circumference of the vibrating part and is bent toward the magnet relative to the vibrating part. A joining part that is joined to an outer circumferential surface of the frame is provided to the bent part. The vibrating plate is installed on the frame by joining the joining part provided to the bent part bent toward the magnet relative to the vibrating part to the outer circumferential surface of the frame, which makes it possible not only to ensure stable installation of the vibrating plate on the frame but also to achieve a reduction in size.

Description

音響出力装置Audio output device

　本技術は音響を出力する音響出力装置についての技術分野に関する。 This technology relates to the technical field of audio output devices that output sound.

　耳等の頭部に装着されてヘッドホンやイヤホンとして使用されスピーカーユニットから音響の出力が行われる音響出力装置があり、音響出力装置は、近年、室内で使用される態様の他に、室外で使用される態様も増加している。 There are audio output devices that are worn on the head, such as the ears, as headphones or earphones, and sound is output from a speaker unit. In recent years, audio output devices have been increasingly used outdoors in addition to indoors.

　このような音響出力装置には、マグネットとコイルと振動板を有するスピーカーユニットが設けられ、磁気回路によって振動板が振動されることにより音響の出力が行われる所謂ダイナミック形の音響出力装置がある（例えば、特許文献１、特許文献２及び特許文献３参照）。 Such audio output devices include so-called dynamic audio output devices that are provided with a speaker unit having a magnet, a coil, and a diaphragm, and sound is output by vibrating the diaphragm through a magnetic circuit (see, for example, Patent Documents 1, 2, and 3).

　音響出力装置においては、マグネットが取り付けられヨークとしても機能するフレームと称される部材の外周部に、振動板の外周部がダイヤフラムリングによって取り付けられ、振動板のフレームに対する安定した取付状態が確保されている。振動板のフレームに対する安定した取付状態が確保されることにより、磁気回路の駆動力によって振動板が安定した状態で振動され、音響の良好な出力状態が確保される。 In an audio output device, the outer periphery of the diaphragm is attached by a diaphragm ring to the outer periphery of a member called a frame, which has a magnet attached and also functions as a yoke, ensuring a stable attachment state of the diaphragm to the frame. By ensuring a stable attachment state of the diaphragm to the frame, the driving force of the magnetic circuit causes the diaphragm to vibrate in a stable state, ensuring good audio output.

特開２０００－１８８７９７号公報JP 2000-188797 A 特開２０００－１６５９９１号公報JP 2000-165991 A 特開昭５８－７１７９８号公報Japanese Patent Application Publication No. 58-71798

　ところで、上記のような音響出力装置は頭部、特に、耳に装着されて使用されるタイプもあり、また、室外で使用される態様も増加しており、耳への装着性や持ち運びの利便性等を考慮した小型化の要望が高くされている。 However, some of the above-mentioned sound output devices are worn on the head, particularly on the ears, and are increasingly used outdoors, so there is a strong demand for miniaturization that takes into account the ease of wearing on the ears and ease of carrying.

　一方、音響出力装置は頭部に装着されるため、頭部に接触される部分の外形は丸みを有する形状に形成されており、限られたスペースの中に最大の口径を有するスピーカーユニットが配置されることが望ましい。 On the other hand, since the sound output device is worn on the head, the outer shape of the part that comes into contact with the head is rounded, and it is desirable to place a speaker unit with the largest diameter possible within a limited space.

　しかしながら、ダイヤフラムリングを用いて振動板がフレームに取り付けられる構成においては、ダイヤフラムリングの存在によって音響出力装置が大きくなり易い。 However, in a configuration in which the diaphragm is attached to the frame using a diaphragm ring, the presence of the diaphragm ring tends to make the acoustic output device larger.

　そこで、本技術音響出力装置は、振動板のフレームに対する安定した取付状態を確保した上で小型化を図ることを目的とする。 The aim of the audio output device of this technology is to achieve miniaturization while ensuring a stable attachment state of the diaphragm to the frame.

　本技術に係る音響出力装置は、環状のマグネットと前記マグネットが取り付けられたフレームと駆動電流が供給されるコイルと前記コイルが取り付けられた振動板とを有するスピーカーユニットを備え、前記振動板は音響の出力時に前記コイルと一体になって振動される振動部と前記振動部の外周に連続され前記振動部に対して前記マグネット側に屈曲された屈曲部とを有し、前記屈曲部には前記フレームの外周面に接合される接合部が設けられたものである。 The sound output device according to this technology comprises a speaker unit having a ring-shaped magnet, a frame to which the magnet is attached, a coil to which a drive current is supplied, and a diaphragm to which the coil is attached, the diaphragm having a vibration part that vibrates integrally with the coil when sound is output, and a bending part that is continuous with the outer periphery of the vibration part and is bent toward the magnet with respect to the vibration part, and the bending part is provided with a joint that is joined to the outer periphery of the frame.

　これにより、振動部に対してマグネット側に屈曲された屈曲部に設けられた接合部がフレームの外周面に接合されることにより振動板がフレームに取り付けられる。 As a result, the diaphragm is attached to the frame by joining the joint provided at the bent portion bent toward the magnet side relative to the vibrating portion to the outer peripheral surface of the frame.

図２乃至図１４と共に本技術音響出力装置の実施の形態を示すものであり、本図は、音響出力装置の斜視図である。FIG. 1 shows an embodiment of a sound output device according to the present technology together with FIG. 2 to FIG. 14, and is a perspective view of the sound output device. 音響出力装置の分解斜視図である。FIG. 2 is an exploded perspective view of the sound output device. 第１のケースの斜視図である。FIG. 第１のケースの断面図である。FIG. 4 is a cross-sectional view of the first case. スピーカーユニットが第１のケースのユニット配置空間に配置された状態を示す断面図である。4 is a cross-sectional view showing a state in which the speaker unit is arranged in a unit arrangement space of the first case. FIG. スピーカーユニットの断面図である。FIG. 2 is a cross-sectional view of the speaker unit. 振動板のフレームに対する取付状態を示す拡大断面図である。4 is an enlarged cross-sectional view showing a state in which the diaphragm is attached to the frame. FIG. 振動板の最外周部に接着剤が塗布された状態を示す拡大断面図である。4 is an enlarged cross-sectional view showing a state in which an adhesive is applied to the outermost periphery of the diaphragm. FIG. マイクロフォンに接続された配線基板の第１のケースに対する配置状態を示す斜視図である。11 is a perspective view showing an arrangement state of a wiring board connected to a microphone with respect to a first case. FIG. マイクロフォンに接続された配線基板の第１のケースに対する配置状態を示す断面図である。4 is a cross-sectional view showing the arrangement of a wiring board connected to a microphone relative to a first case. FIG. コイルから引き出された引き出し線の配置状態を示す側面図である。FIG. 4 is a side view showing an arrangement of wires drawn out from a coil. 図１３及び図１４と共にスピーカーユニットの組付手順を示すものであり、本図は、振動板にコイルが取り付けられた状態を示す断面図である。13 and 14 show the steps for assembling the speaker unit, and this figure is a cross-sectional view showing the state in which the coil is attached to the diaphragm. 振動板が第１のケースに組み付けられた状態を示す断面図である。4 is a cross-sectional view showing a state in which the diaphragm is assembled to the first case. FIG. 振動板がフレームに組み付けられた状態を示す断面図である。4 is a cross-sectional view showing a state in which the diaphragm is attached to a frame. FIG.

　以下に、本技術音響出力装置を実施するための形態を添付図面に従って説明する。以下に示した実施の形態は、本技術音響出力装置をヘッドホンに適用したものである。但し、本技術の適用範囲はヘッドホンに限られることはなく、イヤホン等の他の各種の音響出力装置に広く適用することができる。 Below, an embodiment for implementing the sound output device of the present technology will be described with reference to the attached drawings. In the embodiment shown below, the sound output device of the present technology is applied to headphones. However, the scope of application of the present technology is not limited to headphones, and can be widely applied to various other sound output devices such as earphones.

　尚、以下に示す音響出力装置には、音響の出力部として機能するダイナミック形のスピーカーユニットが設けられ、スピーカーユニットは環状のコイルやマグネットを有している。以下の説明において方向を示すときには、コイルの軸方向を前後方向として前後上下左右の方向を示すものとする。 The sound output device described below is equipped with a dynamic speaker unit that functions as an audio output section, and the speaker unit has a ring-shaped coil and magnet. When directions are indicated in the following explanation, the axial direction of the coil is taken as the front-to-back direction, and the directions indicated are front-to-back, up-down, left-to-right.

　但し、以下に示す前後上下左右の方向は説明の便宜上のものであり、本技術の実施に関しては、これらの方向に限定されることはない。 However, the directions of front, back, up, down, left and right shown below are for convenience of explanation, and the implementation of this technology is not limited to these directions.

　＜音響出力装置の構成＞
　先ず、音響出力装置１の構成について説明する（図１乃至図１１参照）。 <Configuration of the Sound Output Device>
First, the configuration of the sound output device 1 will be described (see FIGS. 1 to 11).

　音響出力装置１は、例えば、一対で使用され、一方が左耳用として使用され他方が右耳用として使用される。但し、一つの音響出力装置１を使用して音響の聞き取りが行われてもよい。 The sound output devices 1 are used, for example, in a pair, one for the left ear and the other for the right ear. However, sound may be heard using a single sound output device 1.

　音響出力装置１は外筐として設けられたハウジング２とハウジング２の内部に配置された所要の各部とを有している（図１及び図２参照）。 The sound output device 1 has a housing 2 that serves as an outer case, and the necessary parts arranged inside the housing 2 (see Figures 1 and 2).

　ハウジング２は第１のケース３と第２のケース４が前後方向において結合されて構成されている。 The housing 2 is constructed by joining a first case 3 and a second case 4 in the front-to-rear direction.

　第１のケース３は後方に開口された凹状のケース部５とケース部５から前斜め側方に突出された音導用筒状部６とケース部５の後端部から上方に突出された端子用突部７とケース部５から側方に張り出された張出部８とが一体に形成されて成る。ケース部５は外面の全体が外側に凸の曲面状に形成されている。ケース部５は前後方向から見た形状が略円形状に形成され、内部の空間がユニット配置空間５ａとして形成されている。 The first case 3 is integrally formed with a concave case section 5 that opens to the rear, a sound-guiding tubular section 6 that protrudes diagonally to the front side from the case section 5, a terminal protrusion 7 that protrudes upward from the rear end of the case section 5, and a protruding section 8 that protrudes to the side from the case section 5. The entire outer surface of the case section 5 is formed into an outwardly convex curved surface. The case section 5 is formed into a roughly circular shape when viewed from the front-to-rear direction, and the internal space is formed as a unit arrangement space 5a.

　音導用筒状部６は略円筒状に形成されている。音導用筒状部６の内部の空間は音導空間６ａとして形成されケース部５のユニット配置空間５ａに連通されている。音導用筒状部６には音導空間６ａにマイク配置部６ｂが設けられている。 The sound-guiding tubular portion 6 is formed in a substantially cylindrical shape. The internal space of the sound-guiding tubular portion 6 is formed as a sound-guiding space 6a, which is connected to the unit arrangement space 5a of the case portion 5. The sound-guiding tubular portion 6 has a microphone arrangement portion 6b provided in the sound-guiding space 6a.

　端子用突部７には、例えば、三つの端子配置孔７ａが形成されている。端子用突部７の後面側には三つの接続端子が実装された図示しない端子用基板が配置され、端子配置孔７ａにそれぞれ接続端子が挿入されて配置されている。接続端子は、例えば、充電端子や通信端子等である。 The terminal protrusion 7 has, for example, three terminal arrangement holes 7a formed therein. A terminal board (not shown) on which three connection terminals are mounted is disposed on the rear side of the terminal protrusion 7, and the connection terminals are inserted and arranged in the terminal arrangement holes 7a. The connection terminals are, for example, charging terminals, communication terminals, etc.

　張出部８は後方に開口された浅い凹状に形成されている。 The protrusion 8 is formed in a shallow recess that opens to the rear.

　ケース部５は略円環状の周面部９と周面部９の前端部に連続された曲面状の閉塞部１０とを有し、閉塞部１０に音導用筒状部６が連続されている。閉塞部１０は前方に凸の緩やかな略球面状に形成されている。 The case 5 has a substantially annular peripheral surface 9 and a curved blocking portion 10 that is connected to the front end of the peripheral surface 9, and the sound-guiding tubular portion 6 is connected to the blocking portion 10. The blocking portion 10 is formed in a substantially spherical shape that is gently convex toward the front.

　周面部９の内周部には後方を向く円環状の押さえ面９ａが形成されている（図３及び図４参照）。周面部９の内周面は押さえ面９ａの前側の部分が第１の周面９ｂとして形成され押さえ面９ａの後側の部分が第２の周面９ｃとして形成され、第２の周面９ｃが第１の周面９ｂより外周側に位置されている。第１の周面９ｂと第２の周面９ｃは後方へ行くに従って外方に変位するように緩やかに傾斜されている。 A circular pressing surface 9a facing rearward is formed on the inner periphery of the peripheral portion 9 (see Figures 3 and 4). The front portion of the inner periphery of the peripheral portion 9 is formed as a first peripheral surface 9b, and the rear portion of the pressing surface 9a is formed as a second peripheral surface 9c, with the second peripheral surface 9c being positioned more radially outward than the first peripheral surface 9b. The first peripheral surface 9b and the second peripheral surface 9c are gently inclined so that they are displaced outward as they move rearward.

　ケース部５の内面側には周面部９と閉塞部１０に亘る部分に保持溝１１が形成され、保持溝１１は周面部９の一部から閉塞部１０を通り音導用筒状部６に向かう位置に形成されている。従って、周面部９における保持溝１１が形成された位置は押さえ面９ａと第１の周面９ｂと第２の周面９ｃが形成されていない非形成部９ｄとされている。 A retaining groove 11 is formed on the inner surface of the case 5 in a portion spanning the peripheral surface 9 and the blocking portion 10, and the retaining groove 11 is formed at a position that runs from a part of the peripheral surface 9 through the blocking portion 10 toward the sound-guiding tubular portion 6. Therefore, the position where the retaining groove 11 is formed on the peripheral surface 9 is a non-formed portion 9d where the pressing surface 9a, the first peripheral surface 9b, and the second peripheral surface 9c are not formed.

　第２のケース４は第１のケース３と反対側に開口された凹状の本体部１２と本体部１２から下方に突出されたステム部１３とが一体に形成されて成る。 The second case 4 is integrally formed with a concave main body 12 that opens on the side opposite the first case 3 and a stem 13 that protrudes downward from the main body 12.

　本体部１２は横長の形状に形成された第１のカバー部１４と第１のカバー部１４の上側に位置された第２のカバー部１５とから成る。本体部１２の開口部は第１のケース３の後端部と同じ形状及び大きさにされた周状結合部１６として設けられている。 The main body 12 is made up of a first cover part 14 formed in a horizontally elongated shape and a second cover part 15 positioned above the first cover part 14. The opening of the main body 12 is provided as a circumferential joint part 16 that is the same shape and size as the rear end part of the first case 3.

　第２のケース４には、本体部１２の内部に図示しないバッテリー（電池）が配置され、ステム部１３の内部にフィードフォワードマイクとして機能する図示しないマイクロフォンが配置される。 In the second case 4, a battery (not shown) is placed inside the main body 12, and a microphone (not shown) that functions as a feedforward microphone is placed inside the stem 13.

　ハウジング２は第１のケース３のケース部５と第２のケース４の周状結合部１６とが突き合わされて結合されることにより構成される（図１参照）。 The housing 2 is constructed by butting together the case portion 5 of the first case 3 and the circumferential joint portion 16 of the second case 4 (see Figure 1).

　第１のケース３のユニット配置空間５ａにはスピーカーユニット１７が配置される（図５参照）。スピーカーユニット１７から出力される音響は音導用筒状部６の音導空間６ａを通って外部へ向けて放射される。スピーカーユニット１７はダイナミック形のスピーカーユニットであり、フレーム１８とマグネット１９と平板ヨーク２０と保持部材２１と振動板２２とコイル２３を有している（図５及び図６参照）。 A speaker unit 17 is placed in the unit placement space 5a of the first case 3 (see Figure 5). Sound output from the speaker unit 17 passes through the sound-guiding space 6a of the sound-guiding tubular portion 6 and is radiated to the outside. The speaker unit 17 is a dynamic type speaker unit, and has a frame 18, a magnet 19, a flat yoke 20, a holding member 21, a diaphragm 22, and a coil 23 (see Figures 5 and 6).

　フレーム１８は磁性金属材料によって形成され、前後方向を向く円環状に形成されたベース板部２４とベース板部２４の外周部から前方に突出された円環状の連結部２５と連結部２５の前端部から外方に張り出されたフランジ部２６とフランジ部２６の外周寄りの位置から前方に突出された立壁部２７とが一体に形成されて成る。 The frame 18 is made of a magnetic metal material and is integrally formed with a base plate portion 24 formed in a circular ring shape facing the front-to-rear direction, a circular connecting portion 25 protruding forward from the outer periphery of the base plate portion 24, a flange portion 26 protruding outward from the front end of the connecting portion 25, and a vertical wall portion 27 protruding forward from a position near the outer periphery of the flange portion 26.

　フランジ部２６の外周部には立壁部２７の外周側に前方を向く面が形成され、この面が受け面２６ａとして形成されている。フランジ部２６の外周部には引き出し孔２６ｂが形成されている。フランジ部２６の外周面２６ｃは後方へ行くに従って緩やかに外方に変位するように傾斜されている。 The outer periphery of the flange portion 26 is formed with a surface facing forward on the outer periphery side of the vertical wall portion 27, and this surface is formed as a receiving surface 26a. The outer periphery of the flange portion 26 is formed with a pull-out hole 26b. The outer periphery surface 26c of the flange portion 26 is inclined so that it gradually displaces outward as it moves rearward.

　立壁部２７の外周面は後方へ行くに従って外方に変位するように緩やかに傾斜された傾斜面２７ａとして形成されている。 The outer peripheral surface of the vertical wall portion 27 is formed as a gently inclined inclined surface 27a that displaces outward as it moves rearward.

　マグネット１９と平板ヨーク２０は何れも円環状に形成され、前後方向において結合されている。マグネット１９の前面には平板ヨーク２０が取り付けられ、マグネット１９の後面はフレーム１８におけるベース板部２４の前面に取り付けられている。 The magnet 19 and the flat yoke 20 are both formed in an annular shape and are connected in the front-to-rear direction. The flat yoke 20 is attached to the front surface of the magnet 19, and the rear surface of the magnet 19 is attached to the front surface of the base plate portion 24 of the frame 18.

　保持部材２１は磁性金属材料によって略円筒状に形成され、フレーム１８のベース板部２４とマグネット１９と平板ヨーク２０に挿通された状態で前端部が平板ヨーク２０に固定され後端部がベース板部２４に固定されている。従って、スピーカーユニット１７においては、保持部材２１によってフレーム１８とマグネット１９と平板ヨーク２０が前後方向において密着された状態で結合されて保持されている。 The holding member 21 is made of a magnetic metal material and is formed in a generally cylindrical shape, and is inserted through the base plate portion 24 of the frame 18, the magnet 19, and the flat yoke 20, with its front end fixed to the flat yoke 20 and its rear end fixed to the base plate portion 24. Therefore, in the speaker unit 17, the frame 18, the magnet 19, and the flat yoke 20 are joined and held in close contact with each other in the front-to-rear direction by the holding member 21.

　フレーム１８とマグネット１９と平板ヨーク２０が結合された状態においては、フレーム１８における連結部２５の内周面とマグネット１９及び平板ヨーク２０の外周面との間に所定の空間としてギャップ２８が形成される。 When the frame 18, magnet 19, and flat yoke 20 are joined together, a gap 28 is formed as a predetermined space between the inner circumferential surface of the connecting portion 25 of the frame 18 and the outer circumferential surfaces of the magnet 19 and flat yoke 20.

　振動板２２は音響の出力時に振動される振動部２９と振動部２９に対してマグネット１９側に屈曲された屈曲部３０とを有している。 The diaphragm 22 has a vibration portion 29 that vibrates when sound is output, and a bent portion 30 that is bent toward the magnet 19 relative to the vibration portion 29.

　振動部２９は前方に凸の略球面状に形成されたドーム部３１とドーム部３１の外周縁に連続された環状の外周部３２とから成る。 The vibration part 29 consists of a dome part 31 formed in a roughly spherical shape that is convex forward, and a ring-shaped outer peripheral part 32 that is continuous with the outer periphery of the dome part 31.

　屈曲部３０は外周部３２の外周縁に連続された連続部３３と連続部３３に連続された接合部３４とを有している。接合部３４は連続部３３に対して外側に略直角に折り曲げられた段差部３４ａと段差部３４ａに対して内側に略直角に折り曲げられた最外周部３４ｂとから成る。連続部３３は後方へ行くに従って外方に変位するように緩やかに傾斜され、最外周部３４ｂも後方へ行くに従って外方に変位するように緩やかに傾斜されている。 The bent portion 30 has a continuous portion 33 that is continuous with the outer peripheral edge of the outer peripheral portion 32, and a joint portion 34 that is continuous with the continuous portion 33. The joint portion 34 is made up of a step portion 34a that is bent outward at a substantially right angle from the continuous portion 33, and an outermost portion 34b that is bent inward at a substantially right angle from the step portion 34a. The continuous portion 33 is gently inclined so as to be displaced outward as it moves rearward, and the outermost portion 34b is also gently inclined so as to be displaced outward as it moves rearward.

　コイル２３は前端部が振動部２９のドーム部３１と外周部３２の境界部２９ａにおける後面に接着等によって固定され、少なくとも一部がギャップ２８に位置される。 The front end of the coil 23 is fixed by adhesive or the like to the rear surface of the boundary 29a between the dome portion 31 and the outer periphery 32 of the vibrating portion 29, and at least a portion of it is positioned in the gap 28.

　振動板２２は、例えば、段差部３４ａがフレーム１８の受け面２６ａに接着剤１００によって取り付けられる（図７参照）。このとき段差部３４ａは第１のケース３の押さえ面９ａによって前側から押さえられ受け面２６ａに押し付けられて接合される。 The diaphragm 22 is attached, for example, by the step portion 34a to the receiving surface 26a of the frame 18 with adhesive 100 (see FIG. 7). At this time, the step portion 34a is pressed from the front by the pressing surface 9a of the first case 3 and pressed against the receiving surface 26a to be joined.

　また、最外周部３４ｂは少なくとも一部がフレーム１８の外周面に接合される。このとき最外周部３４ｂの少なくとも一部がフレーム１８の外周面と第１のケース３における周面部９の内周面とによって挟持されていてもよい。尚、最外周部３４ｂは少なくとも一部がフレーム１８の外周面に接着されていてもよい。 Furthermore, at least a portion of the outermost portion 34b is joined to the outer peripheral surface of the frame 18. In this case, at least a portion of the outermost portion 34b may be sandwiched between the outer peripheral surface of the frame 18 and the inner peripheral surface of the peripheral portion 9 of the first case 3. Furthermore, at least a portion of the outermost portion 34b may be glued to the outer peripheral surface of the frame 18.

　上記のように音響出力装置１においては、第１のケース３に押さえ面９ａが形成され、フレーム１８に受け面２６ａが形成され、振動板２２の接合部３４に段差部３４ａが設けられ、段差部３４ａが押さえ面９ａによって押さえられ受け面２６ａに押し付けられる。 As described above, in the sound output device 1, the pressing surface 9a is formed on the first case 3, the receiving surface 26a is formed on the frame 18, and a step portion 34a is provided at the joint 34 of the diaphragm 22, and the step portion 34a is pressed by the pressing surface 9a and pressed against the receiving surface 26a.

　従って、段差部３４ａが第１のケース３によってフレーム１８に押し付けられた状態で接合部３４がフレーム１８の外周面に接合されるため、屈曲部３０のフレーム１８に対する安定した固定状態を確保することができる。 Therefore, the joint 34 is joined to the outer circumferential surface of the frame 18 while the step portion 34a is pressed against the frame 18 by the first case 3, so that a stable fixed state of the bent portion 30 to the frame 18 can be ensured.

　また、段差部３４ａが受け面２６ａに接着されているため、段差部３４ａが第１のケース３によってフレーム１８に押し付けられた状態で段差部３４ａが受け面２６ａに接着され、振動板２２のフレーム１８に対する安定した強固な固定状態を確保することができる。 In addition, because the step portion 34a is adhered to the receiving surface 26a, the step portion 34a is adhered to the receiving surface 26a while being pressed against the frame 18 by the first case 3, ensuring a stable and strong fixation of the diaphragm 22 to the frame 18.

　尚、最外周部３４ｂには厚み方向における両側にそれぞれフレーム１８におけるフランジ部２６の外周面２６ｃと第１のケース３における周面部９の第２の周面９ｃとが対向した状態で位置されており、段差部３４ａの接着に代えて最外周部３４ｂの先端部に接着剤１００が塗布されてもよい（図８参照）。最外周部３４ｂの先端部に接着剤１００が塗布されることにより、塗布された接着剤１００が最外周部３４ｂとフレーム１８の外周面２６ｃとの間に回り込むと共に最外周部３４ｂと周面部９の第２の周面９ｃとの間に回り込み、最外周部３４ｂがフレーム１８と第１のケース３の双方に同時に接着される。 Furthermore, the outer peripheral portion 34b is positioned such that the outer peripheral surface 26c of the flange portion 26 of the frame 18 and the second peripheral surface 9c of the peripheral portion 9 of the first case 3 face each other on both sides in the thickness direction, and instead of bonding the step portion 34a, adhesive 100 may be applied to the tip of the outer peripheral portion 34b (see FIG. 8). By applying adhesive 100 to the tip of the outer peripheral portion 34b, the applied adhesive 100 wraps around between the outer peripheral portion 34b and the outer peripheral surface 26c of the frame 18 and also wraps around between the outer peripheral portion 34b and the second peripheral surface 9c of the peripheral portion 9, so that the outer peripheral portion 34b is bonded to both the frame 18 and the first case 3 at the same time.

　このようにフレーム１８の外周面と最外周部３４ｂと周面部９の内周面とに亘る領域に接着剤１００が塗布されることにより、接合部３４のフレーム１８に対する固定作業と接合部３４の第１のケース３に対する固定作業とが同時に行われ、作業性の向上を図ることができる。 By applying adhesive 100 to the area spanning the outer peripheral surface of frame 18, outermost peripheral portion 34b, and the inner peripheral surface of peripheral portion 9 in this manner, the work of fixing joint 34 to frame 18 and the work of fixing joint 34 to first case 3 can be performed simultaneously, improving workability.

　尚、音響出力装置１においては、段差部３４ａと受け面２６ａの間に接着剤１００が塗布された状態において、フレーム１８の外周面２６ｃと最外周部３４ｂと周面部９の第２の周面９ｃとに亘る領域に接着剤１００が塗布されてもよい。 In addition, in the sound output device 1, when the adhesive 100 is applied between the step portion 34a and the receiving surface 26a, the adhesive 100 may be applied to the area spanning the outer peripheral surface 26c of the frame 18, the outermost peripheral portion 34b, and the second peripheral surface 9c of the peripheral portion 9.

　また、音響出力装置１においては、屈曲部３０に段差部３４ａが形成されておらず、屈曲部３０の何れかの部分がフレーム１８の外周面２６ｃに接合されていてもよい。 In addition, in the sound output device 1, the step portion 34a may not be formed in the bent portion 30, and any part of the bent portion 30 may be joined to the outer peripheral surface 26c of the frame 18.

　第１のケース３のマイク配置部６ｂにはマイクロフォン３５が取り付けられて配置される（図２参照）。マイクロフォン３５はフィードバックマイクとして機能し、上記したフィードフォワードマイクとして機能するマイクロフォンとともにノイズキャンセリング機能を実行するためのマイクロフォンである。 A microphone 35 is attached and arranged in the microphone arrangement section 6b of the first case 3 (see FIG. 2). The microphone 35 functions as a feedback microphone, and is a microphone for performing a noise canceling function together with the microphone that functions as the feedforward microphone described above.

　マイクロフォン３５は配線基板３６の長手方向における一端部に実装されており、配線基板３６の一端部にはマイクロフォン３５の反対側に第１の補強板３７が取り付けられている。配線基板３６としてはフレキシブルプリント配線板が用いられている。第１の補強板３７によって配線基板３６が補強され、マイクロフォン３５の配線基板３６に対する安定した実装状態が保持される。 The microphone 35 is mounted on one end of the wiring board 36 in the longitudinal direction, and a first reinforcing plate 37 is attached to one end of the wiring board 36 on the opposite side to the microphone 35. A flexible printed wiring board is used as the wiring board 36. The first reinforcing plate 37 reinforces the wiring board 36, and the microphone 35 is maintained in a stable mounting state on the wiring board 36.

　配線基板３６は長手方向における両端部を除く部分が第１のケース３に形成された保持溝１１に挿入された状態で保持される（図９及び図１０参照）。配線基板３６は保持溝１１に挿入されて保持されることにより、振動板２２のドーム部３１と外周部３２に亘って位置される。 The wiring board 36 is held in a state where all of its length except for both ends are inserted into the retaining groove 11 formed in the first case 3 (see Figures 9 and 10). By being inserted and held in the retaining groove 11, the wiring board 36 is positioned across the dome portion 31 and outer periphery 32 of the diaphragm 22.

　配線基板３６の一部には第２の補強板３８が取り付けられている。第２の補強板３８は配線基板３６の厚み方向において第１の補強板３７が取り付けられた側の面と同じ側の面に取り付けられている。即ち、第２の補強板３８は配線基板３６における振動部２９の表面に対向する側の面に取り付けられている。 A second reinforcing plate 38 is attached to a portion of the wiring board 36. The second reinforcing plate 38 is attached to the same surface in the thickness direction of the wiring board 36 as the surface to which the first reinforcing plate 37 is attached. In other words, the second reinforcing plate 38 is attached to the surface of the wiring board 36 that faces the surface of the vibration section 29.

　第２の補強板３８は保持溝１１において周面部９の非形成部９ｄに配置されている。第２の補強板３８が非形成部９ｄに配置されることにより、第２の補強板３８の後面が周面部９の押さえ面９ａと略同一平面上に位置され、第２の補強板３８の後面が押さえ面９ａと同様の機能を有する。 The second reinforcing plate 38 is disposed in the non-formed portion 9d of the peripheral portion 9 in the retaining groove 11. By disposing the second reinforcing plate 38 in the non-formed portion 9d, the rear surface of the second reinforcing plate 38 is positioned on approximately the same plane as the pressing surface 9a of the peripheral portion 9, and the rear surface of the second reinforcing plate 38 has the same function as the pressing surface 9a.

　従って、振動板２２の段差部３４ａが押さえ面９ａと第２の補強板３８によって押さえられた状態で受け面２６ａに押し付けられる。 Therefore, the step portion 34a of the vibration plate 22 is pressed against the receiving surface 26a while being pressed by the pressing surface 9a and the second reinforcing plate 38.

　上記のように、音響出力装置１においては、マイクロフォン３５にフレキシブルプリント配線板である配線基板３６が接続され、第１のケース３には振動部２９の表面に対向する位置に保持溝１１が形成され、配線基板３６が保持溝１１に挿入された状態で保持されている。 As described above, in the sound output device 1, the wiring board 36, which is a flexible printed wiring board, is connected to the microphone 35, and the first case 3 has a holding groove 11 formed in a position facing the surface of the vibration section 29, and the wiring board 36 is held in a state where it is inserted into the holding groove 11.

　従って、配線基板３６が振動部２９の表面に対向して位置された保持溝１１に挿入された状態で保持されるため、音響出力装置１の小型化を確保した上で配線基板３６の良好な保持状態を確保することができる。 Therefore, since the wiring board 36 is held in a state where it is inserted into the holding groove 11 positioned opposite the surface of the vibration part 29, it is possible to ensure that the wiring board 36 is held in a good state while ensuring the compactness of the sound output device 1.

　また、配線基板３６における振動部２９の表面に対向する側の面に第２の補強板３８が取り付けられ、第２の補強板３８の一部が屈曲部３０と第１のケース３の間において押さえ面９ａに並んで位置されている。 A second reinforcing plate 38 is attached to the surface of the wiring board 36 that faces the surface of the vibration section 29, and a portion of the second reinforcing plate 38 is positioned next to the pressing surface 9a between the bent section 30 and the first case 3.

　従って、配線基板３６が保持溝１１に挿入された状態において第２の補強板３８の一部が押さえ面９ａに並んで位置されるため、第２の補強板３８の一部を押さえ面９ａとして機能させることが可能になり、振動板２２と第１のケース３の間の良好な密閉状態を確保することができる。 Therefore, when the wiring board 36 is inserted into the holding groove 11, a portion of the second reinforcing plate 38 is positioned alongside the pressing surface 9a, allowing a portion of the second reinforcing plate 38 to function as the pressing surface 9a, ensuring a good seal between the diaphragm 22 and the first case 3.

　また、第２の補強板３８は配線基板３６の厚み方向において第１の補強板３７が取り付けられた側の面と同じ側の面に取り付けられるため、配線基板３６に対する第１の補強板３７と第２の補強板３８の取付作業が容易であり、作業性の向上を図った上で振動板２２と第１のケース３の間の良好な密閉状態を確保することができる。 In addition, since the second reinforcing plate 38 is attached to the same side of the wiring board 36 as the side to which the first reinforcing plate 37 is attached in the thickness direction, the work of attaching the first reinforcing plate 37 and the second reinforcing plate 38 to the wiring board 36 is easy, and it is possible to ensure a good seal between the diaphragm 22 and the first case 3 while improving workability.

　上記のようにコイル２３は振動板２２に取り付けられた状態で少なくとも一部がギャップ２８に位置されている。コイル２３からはコイル２３に電流を供給するための引き出し線３９が引き出されており、引き出し線３９は図示しない電源回路に接続されている。 As described above, the coil 23 is attached to the diaphragm 22 with at least a portion of it positioned in the gap 28. A lead wire 39 for supplying current to the coil 23 is drawn out from the coil 23, and the lead wire 39 is connected to a power supply circuit (not shown).

　引き出し線３９は振動板２２における屈曲部３０の内周面に沿って位置され、続いて曲線状に屈曲されて後方に引き出されている。引き出し線３９は屈曲部３０の内周面に沿う部分が第１の部分３９ａとして設けられ、曲線状に屈曲された部分が第２の部分３９ｂとして設けられ、振動板２２から後方に引き出された直線状の部分が第３の部分３９ｃとして設けられている。 The lead wire 39 is positioned along the inner circumferential surface of the bent portion 30 of the diaphragm 22, then bent in a curved shape and drawn out rearward. The portion of the lead wire 39 that is along the inner circumferential surface of the bent portion 30 is provided as the first portion 39a, the curved bent portion is provided as the second portion 39b, and the straight portion drawn out rearward from the diaphragm 22 is provided as the third portion 39c.

　引き出し線３９は第３の部分３９ｃがフレーム１８のフランジ部２６に形成された引き出し孔２６ｂに挿通されて後方に引き出されている。 The third portion 39c of the pull-out wire 39 is inserted into the pull-out hole 26b formed in the flange portion 26 of the frame 18 and pulled out rearward.

　このように音響出力装置１においては、引き出し線３９が振動板２２の内周面に周方向において沿って位置された第１の部分３９ａと第１の部分３９ａに対して屈曲された曲線状の第２の部分３９ｂとを有し、フレーム１８の引き出し孔２６ｂに挿通されている。 In this way, in the acoustic output device 1, the lead wire 39 has a first portion 39a positioned circumferentially along the inner surface of the diaphragm 22 and a curved second portion 39b bent relative to the first portion 39a, and is inserted into the lead hole 26b of the frame 18.

　従って、第１の部分３９ａがスピーカーユニット１７の内周面に沿って位置され第２の部分３９ｂが曲線状に屈曲され、引き出し孔２６ｂに挿通されて引き出されるため、コイル２３の振動部２９に伴う振動時に引き出し線３９に負荷が付与され難く、引き出し線３９の損傷を防止することができる。 Therefore, the first portion 39a is positioned along the inner peripheral surface of the speaker unit 17, and the second portion 39b is bent in a curved shape and inserted into the pull-out hole 26b and pulled out, so that a load is not easily applied to the pull-out wire 39 during vibrations caused by the vibrating part 29 of the coil 23, and damage to the pull-out wire 39 can be prevented.

　上記のように、第１のケース３と第２のケース４の内部にそれぞれ所定の各部が配置されると、第１のケース３のケース部５と第２のケース４の本体部１２とが結合され、音導用筒状部６にイヤーパッド５０が取り付けられて音響出力装置１が構成される。イヤーパッド５０が外耳道に挿入されることにより、音響出力装置１が耳に装着される。音響出力装置１が構成された状態において、スピーカーユニット１７から出力された音響は音導用筒状部６の音導空間６ａから外部に放出される。 As described above, once the specified parts are arranged inside the first case 3 and the second case 4, the case part 5 of the first case 3 and the main body part 12 of the second case 4 are joined and the ear pads 50 are attached to the sound-conducting tubular part 6 to form the sound output device 1. The sound output device 1 is worn on the ear by inserting the ear pads 50 into the ear canal. When the sound output device 1 is formed, the sound output from the speaker unit 17 is released to the outside from the sound-conducting space 6a of the sound-conducting tubular part 6.

　＜スピーカーユニットと第１のケースにおける組付＞
　以下に、スピーカーユニット１７と第１のケース３における組付の手順等について説明する（図１２乃至図１４参照）。 <Assembly of speaker unit and first case>
The procedure for assembling the speaker unit 17 to the first case 3 will be described below (see Figs. 12 to 14).

　振動板２２は樹脂フィルム、例えば、ポリエチレンテレフタレート（Poly ethylene terephthalate）等が図示しない成形用金型によって所定の形状に形成される（図１２参照）。このとき、上記したように、連続部３３と最外周部３４ｂが後方へ行くに従って外方に変位するように緩やかに傾斜されている。 The diaphragm 22 is made of a resin film, such as polyethylene terephthalate, which is formed into a predetermined shape by a molding die (not shown) (see FIG. 12). At this time, as described above, the continuous portion 33 and the outermost peripheral portion 34b are gently inclined so that they are displaced outward as they move rearward.

　振動板２２にはコイル２３が取り付けられる。このときコイル２３は各部が緩やかに傾斜された屈曲部３０を基準にして位置決めされて振動板２２に取り付けられ、コイル２３の振動板２２に対する高い位置決め精度が確保され、振動板２２の中心軸とコイル２３の中心軸とが一致される。 The coil 23 is attached to the diaphragm 22. At this time, the coil 23 is positioned based on the bent portion 30, each of which is gently inclined, and attached to the diaphragm 22, ensuring high positioning accuracy of the coil 23 relative to the diaphragm 22, and the central axis of the diaphragm 22 and the central axis of the coil 23 are aligned.

　振動板２２はコイル２３が取り付けられた状態で第１のケース３に後方から挿入されていく（図１３参照）。このとき、第１のケース３の第１の周面９ｂと振動板２２の連続部３３とが何れも後方へ行くに従って緩やかに外方に変位するように傾斜されているため、連続部３３が第１の周面９ｂに案内され、第１のケース３に対して振動板２２が高い精度で位置決めされ第１のケース３における周面部９の中心軸と振動板２２の中心軸とが一致される。また、第１のケース３の第２の周面９ｃと振動板２２の最外周部３４ｂとが何れも後方へ行くに従って緩やかに外方に変位するように傾斜されているため、最外周部３４ｂが第２の周面９ｃに案内され、振動板２２の第１のケース３に対する良好な組付性が確保される。 The diaphragm 22, with the coil 23 attached, is inserted into the first case 3 from the rear (see FIG. 13). At this time, since the first peripheral surface 9b of the first case 3 and the continuous portion 33 of the diaphragm 22 are both inclined so as to be gradually displaced outward as they go rearward, the continuous portion 33 is guided by the first peripheral surface 9b, the diaphragm 22 is positioned with high precision relative to the first case 3, and the central axis of the peripheral surface portion 9 in the first case 3 and the central axis of the diaphragm 22 are aligned. In addition, since the second peripheral surface 9c of the first case 3 and the outermost peripheral portion 34b of the diaphragm 22 are both inclined so as to be gradually displaced outward as they go rearward, the outermost peripheral portion 34b is guided by the second peripheral surface 9c, ensuring good assembly of the diaphragm 22 to the first case 3.

　続いて、マグネット１９等が取り付けられた状態でフレーム１８が第１のケース３に後方から挿入されていく（図１４参照）。フレーム１８が第１のケース３に後方から挿入されていくときには、フレーム１８のフランジ部２６が振動板２２における屈曲部３０の内側に挿入されていく。 Next, with the magnet 19 and other components attached, the frame 18 is inserted into the first case 3 from behind (see FIG. 14). When the frame 18 is inserted into the first case 3 from behind, the flange portion 26 of the frame 18 is inserted inside the bent portion 30 of the diaphragm 22.

　このとき、第１のケース３の第２の周面９ｃと振動板２２の最外周部３４ｂとフランジ部２６の外周面２６ｃとが何れも後方へ行くに従って緩やかに外方に変位するように傾斜されているため、外周面２６ｃが第２の周面９ｃと最外周部３４ｂに案内され、振動板２２に対してフレーム１８が高い精度で位置決めされ振動板２２の中心軸とフレーム１８の中心軸とが一致される。フレーム１８はフランジ部２６の外周面２６ｃが振動板２２の最外周部３４ｂに対向又は密着される。 At this time, the second peripheral surface 9c of the first case 3, the outermost peripheral portion 34b of the diaphragm 22, and the outer peripheral surface 26c of the flange portion 26 are all inclined so as to be gradually displaced outward toward the rear, so that the outer peripheral surface 26c is guided by the second peripheral surface 9c and the outermost peripheral portion 34b, and the frame 18 is positioned with high precision relative to the diaphragm 22, so that the central axis of the diaphragm 22 and the central axis of the frame 18 are aligned. The outer peripheral surface 26c of the flange portion 26 of the frame 18 faces or is in close contact with the outermost peripheral portion 34b of the diaphragm 22.

　尚、フレーム１８の立壁部２７は振動板２２における連続部３３の内側に挿入されるが、立壁部２７の外周面が傾斜面２７ａとして形成されているため、立壁部２７が連続部３３に干渉せずフレーム１８が第１のケース３に円滑に挿入される。 The vertical wall portion 27 of the frame 18 is inserted inside the connecting portion 33 of the diaphragm 22, but because the outer peripheral surface of the vertical wall portion 27 is formed as an inclined surface 27a, the vertical wall portion 27 does not interfere with the connecting portion 33, and the frame 18 can be smoothly inserted into the first case 3.

　＜まとめ＞
　以上に記載した通り、音響出力装置１にあっては、振動板２２が音響の出力時にコイル２３と一体になって振動される振動部２９と振動部２９の外周に連続され振動部２９に対してマグネット１９側に屈曲された屈曲部３０とを有し、屈曲部３０にフレーム１８の外周面に接合される接合部３４が設けられている。 <Summary>
As described above, in the sound output device 1, the diaphragm 22 has a vibration section 29 that vibrates integrally with the coil 23 when sound is output, and a bending section 30 that is continuous with the outer periphery of the vibration section 29 and is bent toward the magnet 19 relative to the vibration section 29, and a joint section 34 is provided on the bending section 30 which is joined to the outer periphery of the frame 18.

　従って、振動部２９に対してマグネット１９側に屈曲された屈曲部３０に設けられた接合部３４がフレーム１８の外周面に接合されることにより振動板２２がフレーム１８に取り付けられるため、振動板２２のフレーム１８に対する安定した取付状態を確保した上で音響出力装置１の小型化を図ることができる。 Therefore, the vibration plate 22 is attached to the frame 18 by joining the joint 34 provided on the bent portion 30, which is bent toward the magnet 19 side relative to the vibrating portion 29, to the outer peripheral surface of the frame 18, so that the sound output device 1 can be made smaller while ensuring a stable attachment state of the vibration plate 22 to the frame 18.

　特に、振動板２２のフレーム１８への取付がダイヤフラムリングを用いずに行われるため、限られたスペースの中に最大の口径を有するスピーカーユニット１７を配置することが可能になり、スピーカーユニット１７の呼び径の最大化を確保した上で音響出力装置１の小型化を図ることができる。 In particular, because the diaphragm 22 is attached to the frame 18 without using a diaphragm ring, it is possible to place a speaker unit 17 with the largest diameter in a limited space, making it possible to miniaturize the sound output device 1 while ensuring that the nominal diameter of the speaker unit 17 is maximized.

　また、音響出力装置１の小型化により、音響出力装置１の耳への装着性や持ち運びの利便性等の向上を図ることもできる。 In addition, by making the sound output device 1 smaller, it is possible to improve the ease of wearing the sound output device 1 on the ear and the convenience of carrying it around.

　＜本技術＞
　本技術は、以下のような構成にすることができる。 <This technology>
The present technology can be configured as follows.

　（１）
　環状のマグネットと前記マグネットが取り付けられたフレームと駆動電流が供給されるコイルと前記コイルが取り付けられた振動板とを有するスピーカーユニットを備え、
　前記振動板は音響の出力時に前記コイルと一体になって振動される振動部と前記振動部の外周に連続され前記振動部に対して前記マグネット側に屈曲された屈曲部とを有し、
　前記屈曲部には前記フレームの外周面に接合される接合部が設けられた
　音響出力装置。 (1)
A speaker unit includes an annular magnet, a frame to which the magnet is attached, a coil to which a driving current is supplied, and a diaphragm to which the coil is attached,
the diaphragm has a vibration part which vibrates integrally with the coil when sound is output, and a bent part which is continuous with the outer periphery of the vibration part and is bent toward the magnet side with respect to the vibration part,
the bent portion is provided with a joint portion that is joined to an outer peripheral surface of the frame.

　（２）
　前記スピーカーユニットを内部に保持するハウジングが設けられ、
　前記ハウジングは音導空間を有する第１のケースと前記第１のケースに結合される第２のケースとを有し、
　前記第１のケースには押さえ面が形成され、
　前記フレームには受け面が形成され、
　前記接合部には段差部が設けられ、
　前記段差部が前記押さえ面によって押さえられ前記受け面に押し付けられた
　前記（１）に記載の音響出力装置。 (2)
A housing is provided to hold the speaker unit therein,
the housing includes a first case having a sound guide space and a second case coupled to the first case;
The first case has a pressing surface formed thereon,
The frame is formed with a receiving surface,
The joint is provided with a step portion,
The sound output device according to (1), wherein the step portion is pressed against the receiving surface by the pressing surface.

　（３）
　前記段差部が前記受け面に接着された
　前記（２）に記載の音響出力装置。 (3)
The acoustic output device according to (2), wherein the step portion is adhered to the receiving surface.

　（４）
　前記接合部の先端部の厚み方向における両側にはそれぞれ前記フレームの外周面と前記第１のケースの内周面とが対向した状態で位置され、
　前記フレームの外周面と前記接合部の先端部と前記第１のケースの内周面とに亘る領域に接着剤が塗布された
　前記（１）又は前記（２）に記載の音響出力装置。 (4)
an outer circumferential surface of the frame and an inner circumferential surface of the first case are positioned opposite each other on both sides in a thickness direction of the tip end of the joint,
The sound output device according to (1) or (2), wherein an adhesive is applied to an area spanning an outer peripheral surface of the frame, a tip end of the joint, and an inner peripheral surface of the first case.

　（５）
　前記第１のケースの内部にはマイクロフォンが配置され、
　前記マイクロフォンにはフレキシブルプリント配線板である配線基板が接続され、
　前記第１のケースには前記振動部の表面に対向する位置に保持溝が形成され、
　前記配線基板が前記保持溝に挿入された状態で保持された
　前記（１）から前記（３）の何れかに記載の音響出力装置。 (5)
A microphone is disposed inside the first case,
A wiring board, which is a flexible printed wiring board, is connected to the microphone,
A holding groove is formed in the first case at a position facing a surface of the vibration section,
The acoustic output device according to any one of (1) to (3), wherein the wiring board is held in a state where it is inserted into the holding groove.

　（６）
　前記第１のケースには押さえ面が形成され、
　前記屈曲部には前記接合部に連続され前記押さえ面によって押さえられる段差部が設けられ、
　前記配線基板における前記振動部の表面に対向する側の面に補強板が取り付けられ、
　前記補強板の所定の面が前記屈曲部と前記第１のケースの間において前記押さえ面に並んで位置された
　前記（１）に記載の音響出力装置。 (6)
The first case has a pressing surface formed thereon,
a step portion is provided in the bent portion and is continuous with the joint portion and is pressed by the pressing surface;
a reinforcing plate is attached to a surface of the wiring board facing a surface of the vibration portion;
The sound output device according to (1), wherein a predetermined surface of the reinforcing plate is positioned next to the pressing surface between the bent portion and the first case.

　（７）
　前記コイルが引き出し線によって電源回路に接続され、
　前記フレームの外周部に引き出し孔が形成され、
　前記引き出し線が前記振動板の内周面に周方向において沿って位置された第１の部分と前記第１の部分に対して屈曲された曲線状の第２の部分とを有し、
　前記コイルが前記引き出し孔に挿通された
　前記（１）から前記（３）の何れかに記載の音響出力装置。 (7)
The coil is connected to a power supply circuit by a lead wire,
A drawing hole is formed on the outer periphery of the frame,
the lead wire has a first portion positioned along the inner peripheral surface of the diaphragm in the circumferential direction and a curved second portion bent relative to the first portion,
The sound output device according to any one of (1) to (3), wherein the coil is inserted into the lead-out hole.

１　　　音響出力装置
２　　　ハウジング
３　　　第１のケース
４　　　第２のケース
６ａ　　音導空間
９ａ　　押さえ面
１１　　保持溝
１７　　スピーカーユニット
１８　　フレーム
１９　　マグネット
２２　　振動板
２３　　コイル
２６ｃ　外周面
２６ａ　受け面
２６ｂ　引き出し孔
２９　　振動部
３０　　屈曲部
３４　　接合部
３４ａ　段差部
３４ｂ　最外周部
３５　　マイクロフォン
３６　　配線基板
３８　　第２の補強板
３９　　引き出し線
３９ａ　第１の部分
３９ｂ　第２の部分
１００　接着剤 REFERENCE SIGNS LIST 1 Acoustic output device 2 Housing 3 First case 4 Second case 6a Sound guide space 9a Holding surface 11 Retaining groove 17 Speaker unit 18 Frame 19 Magnet 22 Diaphragm 23 Coil 26c Outer circumferential surface 26a Receiving surface 26b Lead hole 29 Vibrating section 30 Bent section 34 Joint section 34a Step section 34b Outermost periphery 35 Microphone 36 Wiring board 38 Second reinforcing plate 39 Lead wire 39a First section 39b Second section 100 Adhesive

Claims (7)

　環状のマグネットと前記マグネットが取り付けられたフレームと駆動電流が供給されるコイルと前記コイルが取り付けられた振動板とを有するスピーカーユニットを備え、
　前記振動板は音響の出力時に前記コイルと一体になって振動される振動部と前記振動部の外周に連続され前記振動部に対して前記マグネット側に屈曲された屈曲部とを有し、
　前記屈曲部には前記フレームの外周面に接合される接合部が設けられた
　音響出力装置。 A speaker unit includes an annular magnet, a frame to which the magnet is attached, a coil to which a driving current is supplied, and a diaphragm to which the coil is attached,
the diaphragm has a vibration part which is vibrated integrally with the coil when sound is output, and a bent part which is continuous with the outer periphery of the vibration part and is bent toward the magnet side with respect to the vibration part,
the bent portion is provided with a joint portion that is joined to an outer peripheral surface of the frame. 　前記スピーカーユニットを内部に保持するハウジングが設けられ、
　前記ハウジングは音導空間を有する第１のケースと前記第１のケースに結合される第２のケースとを有し、
　前記第１のケースには押さえ面が形成され、
　前記フレームには受け面が形成され、
　前記接合部には段差部が設けられ、
　前記段差部が前記押さえ面によって押さえられ前記受け面に押し付けられた
　請求項１に記載の音響出力装置。 A housing is provided to hold the speaker unit therein,
the housing includes a first case having a sound guide space and a second case coupled to the first case;
The first case has a pressing surface formed thereon,
The frame is formed with a receiving surface,
The joint is provided with a step portion,
The sound output device according to claim 1 , wherein the step portion is pressed against the receiving surface by the pressing surface. 　前記段差部が前記受け面に接着された
　請求項２に記載の音響出力装置。 The sound output device according to claim 2 , wherein the step portion is bonded to the receiving surface. 　前記スピーカーユニットを内部に保持するハウジングが設けられ、
　前記ハウジングは音導空間を有する第１のケースと前記第１のケースに結合される第２のケースとを有し、
　前記接合部の先端部の厚み方向における両側にはそれぞれ前記フレームの外周面と前記第１のケースの内周面とが対向した状態で位置され、
　前記フレームの外周面と前記接合部の先端部と前記第１のケースの内周面とに亘る領域に接着剤が塗布された
　請求項１に記載の音響出力装置。 A housing is provided to hold the speaker unit therein,
the housing includes a first case having a sound guide space and a second case coupled to the first case;
an outer circumferential surface of the frame and an inner circumferential surface of the first case are positioned opposite each other on both sides in a thickness direction of the tip end of the joint,
The sound output device according to claim 1 , wherein an adhesive is applied to an area extending from an outer circumferential surface of the frame, the tip of the joint, and an inner circumferential surface of the first case. 　前記スピーカーユニットを内部に保持するハウジングが設けられ、
　前記ハウジングは音導空間を有する第１のケースと前記第１のケースに結合される第２のケースとを有し、
　前記第１のケースの内部にはマイクロフォンが配置され、
　前記マイクロフォンにはフレキシブルプリント配線板である配線基板が接続され、
　前記第１のケースには前記振動部の表面に対向する位置に保持溝が形成され、
　前記配線基板が前記保持溝に挿入された状態で保持された
　請求項１に記載の音響出力装置。 A housing is provided to hold the speaker unit therein,
the housing includes a first case having a sound guide space and a second case coupled to the first case;
A microphone is disposed inside the first case,
A wiring board, which is a flexible printed wiring board, is connected to the microphone,
A holding groove is formed in the first case at a position facing a surface of the vibration section,
The sound output device according to claim 1 , wherein the wiring board is held in a state where it is inserted into the holding groove. 　前記第１のケースには押さえ面が形成され、
　前記屈曲部には前記接合部に連続され前記押さえ面によって押さえられる段差部が設けられ、
　前記配線基板における前記振動部の表面に対向する側の面に補強板が取り付けられ、
　前記補強板の所定の面が前記屈曲部と前記第１のケースの間において前記押さえ面に並んで位置された
　請求項５に記載の音響出力装置。 The first case has a pressing surface formed thereon,
a step portion is provided in the bent portion and is continuous with the joint portion and is pressed by the pressing surface;
a reinforcing plate is attached to a surface of the wiring board facing a surface of the vibration portion;
The sound output device according to claim 5 , wherein a predetermined surface of the reinforcing plate is positioned next to the pressing surface between the bent portion and the first case. 　前記コイルが引き出し線によって電源回路に接続され、
　前記フレームの外周部に引き出し孔が形成され、
　前記引き出し線が前記振動板の内周面に周方向において沿って位置された第１の部分と前記第１の部分に対して屈曲された曲線状の第２の部分とを有し、
　前記コイルが前記引き出し孔に挿通された
　請求項１に記載の音響出力装置。 The coil is connected to a power supply circuit by a lead wire,
A drawing hole is formed on the outer periphery of the frame,
the lead wire has a first portion positioned along the inner peripheral surface of the diaphragm in the circumferential direction and a curved second portion bent relative to the first portion,
The sound output device according to claim 1 , wherein the coil is inserted through the lead-out hole.
PCT/JP2024/024772 2023-07-19 2024-07-09 Sound outputting device Pending WO2025018224A1 (en)

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JP2023-117650 2023-07-19
JP2023117650 2023-07-19

Publications (1)

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ID=94281889

Family Applications (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463620U (en) * 1977-10-06 1979-05-04
JP2015126267A (en) * 2013-12-25 2015-07-06 株式会社Ｊｖｃケンウッド Canal type earphone microphone and sound system
WO2019077925A1 (en) * 2017-10-19 2019-04-25 パナソニックＩｐマネジメント株式会社 Loudspeaker and diaphragm unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5463620U (en) * 1977-10-06 1979-05-04
JP2015126267A (en) * 2013-12-25 2015-07-06 株式会社Ｊｖｃケンウッド Canal type earphone microphone and sound system
WO2019077925A1 (en) * 2017-10-19 2019-04-25 パナソニックＩｐマネジメント株式会社 Loudspeaker and diaphragm unit

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