WO2013125355A1 - Ear speaker device - Google Patents

Ear speaker device Download PDF

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Publication number
WO2013125355A1
WO2013125355A1 PCT/JP2013/052813 JP2013052813W WO2013125355A1 WO 2013125355 A1 WO2013125355 A1 WO 2013125355A1 JP 2013052813 W JP2013052813 W JP 2013052813W WO 2013125355 A1 WO2013125355 A1 WO 2013125355A1
Authority
WO
WIPO (PCT)
Prior art keywords
speaker
sound
ear
hole
pin
Prior art date
Application number
PCT/JP2013/052813
Other languages
French (fr)
Japanese (ja)
Inventor
照正 中島
Original Assignee
エムケー電子株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by エムケー電子株式会社 filed Critical エムケー電子株式会社
Publication of WO2013125355A1 publication Critical patent/WO2013125355A1/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008Earpieces of the supra-aural or circum-aural type
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00Stereophonic arrangements
    • H04R5/033Headphones for stereophonic communication
    • H04R5/0335Earpiece support, e.g. headbands or neckrests
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/10Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058Manufacture or assembly
    • H04R1/1075Mountings of transducers in earphones or headphones
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807Enclosures comprising vibrating or resonating arrangements
    • H04R1/2811Enclosures comprising vibrating or resonating arrangements for loudspeaker transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2876Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding
    • H04R1/288Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself by means of damping material, e.g. as cladding for loudspeaker transducers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/025Transducer mountings or cabinet supports enabling variable orientation of transducer of cabinet

Definitions

  • the present invention relates to a head-mounted ear speaker device mounted on the head.
  • the mid-high sound of the reproduced sound is emitted from the speaker unit located slightly away from the ear hole, and the medium-high sound of the reproduced sound is reduced from the hole of the tubular duct functioning as a bass reflex duct.
  • the listener listen to a good reproduction sound including a sufficiently low sound.
  • this ear speaker device is not configured to cover the entire auricle with an ear pad, the problem that it is difficult to hear ambient sounds is also solved.
  • the ear speaker device disclosed in Patent Document 2 has the following problems to be solved. That is, this ear speaker device employs a configuration in which a tubular duct is attached to the housing of the speaker. Therefore, the ear speaker device has a problem that the structure becomes complicated as much as the tubular duct is attached, and when the speaker is slightly shaken by touching the hand in the mounted state, it extends to the vicinity of the ear hole. Since the tip of the tubular duct that touches the ear may touch the ear, there is a problem that the wearing feeling is difficult.
  • the present invention has been made in order to improve such a problem, and it is a main object of the present invention to provide an ear speaker device capable of listening to ambient sounds while being able to listen to sufficient sounds with a simple configuration. To do.
  • the ear speaker device according to claim 3 is the ear speaker device according to claim 2, wherein the sound absorbing material absorbs sound on a lower frequency side than the first sound absorbing material and the first sound absorbing material.
  • a two-sound absorber is laminated from the back side of the enclosure toward the speaker unit.
  • the ear speaker device according to claim 4 is the ear speaker device according to any one of claims 1 to 3, wherein the pressing portion has a first through hole formed at the center and a first engagement portion formed on the upper surface.
  • a flat disc body, a second through hole is formed at the center of the disc body and opposed to the upper surface of the disc body, and the second surface is opposed to the upper surface of the disc body.
  • a disk-shaped first support wall formed with a second meshing portion that can mesh with the first meshing portion, a surface facing the bottom surface of the disk body and facing the bottom surface of the disk body
  • a disc-shaped second support wall having a circular recess formed at the center thereof, a main body having a peripheral wall for connecting a peripheral portion of each of the support walls leaving a part thereof, the first through-hole and the second through-hole Penetrates the hole and one end is inserted into the circular recess, and the other end is 1 a pin body disposed in a state of protruding from the support wall, a mounting pin having a pin head formed at the other end of the pin body, the disk body on the outer peripheral surface of the pin body, and the pin body
  • a retaining ring that is attached to a portion located between the second support wall and prevents the mounting pin from being pulled out, and disposed between the second support wall and the retaining ring,
  • a spring that constantly urges the retaining ring toward the first supporting wall side together with the
  • each pressing portion is configured to be capable of rotating the support arm around the first axis
  • the speaker attached to the support arm can be connected to the pressing portion. Since it can be rotated and moved to a specified position, the sound that is output from the speaker can be heard efficiently with very little damage to the eardrum and the ability to hear the surrounding sound. Can be heard).
  • the ear speaker device wherein a sound reflecting material and a sound absorbing material are laminated from the back side of the enclosure toward the speaker unit inside the enclosure formed in a semi-cup shape. Is formed with a hole for exposing the surface of the sound reflecting material to the speaker unit side.
  • this ear speaker device sound can be efficiently output to the ear hole in a state where the directivity in the direction of the axis of the speaker is sufficiently enhanced and sound leakage from the enclosure is small.
  • the sound output from the unit can be heard more efficiently.
  • the first sound absorbing material and the second sound absorbing material that absorbs the sound on the lower frequency side than the first sound absorbing material are directed from the back side of the enclosure toward the speaker unit. Since it is configured to be laminated, it is possible to sufficiently suppress leakage of unnecessary sound from the enclosure from the low sound range to the high sound range.
  • the ear speaker device of the fifth aspect since the speaker is connected to the support arm so as to be rotatable about the second axis along the length direction of the support arm, the direction of the speaker can be finely adjusted. Therefore, the speaker can be surely arranged at a predetermined position where the speaker faces the direction of the ear hole. Thereby, the sound output from the speaker can be heard even more efficiently.
  • the ear speaker device 1 includes a speaker 2 (in this example, a pair of speakers 2 and 2) and a mounting unit 3, and is mounted on the listener's head 100.
  • An acoustic signal input from an unillustrated earphone jack is converted into sound at each speaker 2 and output.
  • the enclosure 11 has a front surface (the right side surface in the figure) opened in a circular shape, and the back side (the left surface side in the figure) has a semi-cup shape (for example, a hemisphere). Or a semi-elliptical sphere (in this example, a semi-elliptical sphere as an example).
  • the outer surface of the enclosure 11 is coupled to a later-described semi-cylindrical portion 13 d formed on the outer surface of the speaker cover 13, so that a cylindrical coupling portion 21 (see FIGS. 5, 6 and 7) in which the coupling pin 14 is accommodated. ) Is formed.
  • the axis of the enclosure 11 formed in a semi-elliptical spherical shape is L3, in this example, as an example, the central axis of the cylindrical connecting portion 21 (an axis that coincides with the second axis L2).
  • the semi-cylindrical portion 11a is formed upright on the outer surface of the enclosure 11 so that the central axis L2) is orthogonal to the axis L3.
  • a first rib portion 11b see FIG. 7
  • a semi-annular second rib portion 11c see FIG. 6) having a rectangular shape in plan view.
  • the second rib portion 11c has a plurality of engagement holes (in this example, as an example, three engagement holes 11d, 11e, and 11f as shown in FIG. 6). ) Are formed at equiangular intervals (for example, at intervals of about 15 degrees) on concentric circles centered on the central axis L2.
  • the speaker cover 13 is formed so as to cover the cylindrical body 13a formed to have the same diameter as the diameter of the opening in the enclosure 11, and the opening on the front surface (right side surface in the figure) of the cylindrical body 13a. And a cover portion 13b in which a large number of through-holes A are formed, and a hood portion 13c formed so as to extend over the entire periphery at the peripheral portion of the front surface of the cylindrical body 13a.
  • the hood portion 13c can adopt a configuration (not shown) that extends from the front surface of the cylindrical body 13a with a uniform length, but in this example, the sound output from the speaker unit 12 is received by the listener. The side farther from the head 100 (in FIGS.
  • the outer surface of the speaker cover 13 is formed with a semi-cylindrical portion 13d constituting the above-described cylindrical connecting portion 21 by being coupled to the semi-cylindrical portion 11a.
  • the semi-cylindrical portion 13d stands on the outer surface of the cylindrical body 13a so that the central axis L2 of the cylindrical connecting portion 21 is orthogonal to the axis of the cylindrical body 13a (coaxial with the axial line L3 of the enclosure 11). Is formed. Further, on the inner surface of the semi-cylindrical portion 13d, a third rib portion 13e having a rectangular shape in plan view and a fourth rib portion 13f having a semi-annular shape are directed in a direction away from the center (axis) side of the cylindrical body 13a.
  • the fourth rib portion 13 f has a plurality of engagement holes (in this example, as an example, as shown in FIG. 6, three engagement holes 13 g, 13 h, 13i) are formed on the concentric circle centering on the central axis L2 at the same angular intervals as the engagement holes 11d, 11e, 11f.
  • the engagement hole 13g and the engagement hole 11f are arranged at a point-symmetrical position around the central axis L2, and the engagement hole 13h and the engagement hole 11e are arranged at a point-symmetrical position to engage with each other.
  • the hole 13i and the engagement hole 11d are arranged at point-symmetric positions.
  • the connecting pin 14 has a cylindrical pin body portion 14a having an outer diameter slightly smaller than the diameter of the circular hole 22a, and one end portion of the pin body portion 14a (the upper end in the figure).
  • An annular first flange portion 14b formed on the outer peripheral surface of the pin, an annular second flange portion 14c formed on the outer peripheral surface of the other end portion (lower end in the figure) of the pin main body portion 14a, and a pin main body portion.
  • a pair of engaged projections 14e On a concentric circle centered on the central axis (a circle having the same diameter as the circle in which the engagement hole 11d and the engagement hole 13g are formed) and projecting at a point-symmetrical position with respect to the central axis A pair of engaged projections 14e, as shown in FIGS. A pair of arcuate slit portions 14f formed in a state of being concentrically centered about the central axis and the respective engaging projections 14e of the second flange portion 14c are formed inside the respective engaging projections 14e in the two flange portions 14c.
  • stopper pins 14g are provided on the back surface of the above-described surface (the above-described facing surface), and are provided upright at both edge portions along the circumferential direction of each arcuate slit portion 14f. Further, an insertion hole 14h penetrating along the center line direction is formed in the center of the pin main body portion 14a. A cable (not shown) for transmitting an acoustic signal input from the earphone jack to the speaker unit 12 is inserted into the insertion hole 14h.
  • board thickness (thickness along the central-axis direction of the pin main-body part 14a) of the 2nd flange part 14c is the rib part 22 formed in the cylindrical connection part 21, and a 1st rib. It is formed slightly thinner than the distance between the portion 11b (and the third rib portion 13e). Further, as shown in FIG. 7, the distance between the pair of stopper pins 14g formed at both ends of one arcuate slit portion 14f is greater than the width of the first rib portion 11b (same as the width of the third rib portion 13e). Is also formed wide.
  • the connecting pin 14 having the above configuration has a pin body portion 14 a that passes through a circular hole 22 a formed at the center of the rib portion 22, and the first rib portion 11 b (and the third rib).
  • Portion 13e) and rib portion 22 (second rib portion 11c and fourth rib portion 13f), second flange portion 14c is accommodated, and upper region (half-cylinder) of second rib portion 11c in semi-cylindrical portion 11a
  • the third flange portion 14d is accommodated in the upper portion of the fourth rib portion 13f in the portion 13d) and, as shown in FIG. 7, a pair formed on both edge portions of one arcuate slit portion 14f.
  • the first rib portion 11b is disposed between the stopper pins 14g, and the third rib portion 13e is formed between the pair of stopper pins 14g formed at both edge portions of the other arcuate slit portion 14f.
  • Cylindrical ream in the installed state The section 21, the central axis of the pin body portion 14a is mounted in a state that matches the central axis L2 of the cylindrical connecting portion 21.
  • the connecting pin 14 is rotatable around the central axis L2 in the cylindrical connecting portion 21, and one of the two engaging protrusions 14e formed on the second flange portion 14c is the engaging protrusion 14e. Enters the engagement hole 11d formed in the second rib portion 11c of the semi-cylindrical portion 11a, and the other engagement protrusion 14e is formed in the fourth rib portion 13f of the semi-cylindrical portion 13d. The first position that enters and engages in the engagement hole 13i, and one engagement protrusion 14e enters and engages in the engagement hole 11e formed in the second rib portion 11c, and the other engagement.
  • the distance between the pair of stopper pins 14g formed at both ends of one arcuate slit portion 14f is the width of the first rib portion 11b (of the third rib portion 13e).
  • the connecting pin 14 has one stopper pin 14g on the first rib portion 11b side (for example, the upper pin in the figure) that is one end of the first rib portion 11b.
  • the other stopper pin 14g on the third rib portion 13e side (for example, the lower one in the drawing) is in contact with the other end portion of the third rib portion 13e (for example, the upper end portion in the drawing).
  • the other engaging protrusion 14e is formed in a narrow arch shape by forming the arc-shaped slit portion 14f, and is positioned at the outer peripheral side portion of the second flange portion 14c having enhanced flexibility. . Therefore, when the connecting pin 14 is rotated and positioned from any one of the first position to the third position to another position, the outer peripheral portion is deformed with an appropriate elastic force.
  • each engagement protrusion 14e can be moved along the axial direction of the pin main body 14a, the stress applied to each engagement protrusion 14e and each engagement hole can be reduced. For this reason, it is possible to give an appropriate click feeling to the positioning of the connecting pin 14 while greatly reducing wear of each engaging protrusion 14e and each engaging hole.
  • the sound reflecting material 15, the first sound absorbing material 16, and the second sound absorbing material 17 are arranged inside the enclosure 11 from the back side of the enclosure 11 (left side in the figure) toward the speaker unit 12. Laminated and arranged in this order.
  • the sound reflecting material 15, the first sound absorbing material 16, and the second sound absorbing material 17 have the respective outer shapes of the enclosure 11 at the respective arrangement positions inside the enclosure 11. By being formed in advance in a shape that matches the shape of the peripheral surface, it is disposed in close contact with the inner peripheral surface of the enclosure 11.
  • the 1st sound absorption material 16 and the 2nd sound absorption material 17 can also be laminated
  • first sound absorbing material 16 and the second sound absorbing material 17 are circular holes 16a and 17a (an example of holes, which expose the surface of the sound reflecting material 15 to the speaker unit 12 side.
  • Each central axis is coaxial with the axis L3. Hole) is formed at the center of each.
  • the inner surface shape of the circular holes 16a and 17a is gradually increased from the sound reflecting material 15 side toward the speaker unit 12 side as shown in FIGS. It is formed to be like a horn.
  • the sound directed in the direction along the axis L3 of the enclosure 11 is circular holes 16a and 17a formed in the shape of a horn as described above on the side of the speaker unit 12 along the direction of the axis L3.
  • the use of the speaker unit 12 having high directivity is considered.
  • Te, speaker 2 the directivity of the axial line L3 direction of the sound is improved.
  • the second sound absorbing material 17 is configured using a sound absorbing material (for example, soft urethane foam) that absorbs more of the sound on the lower frequency side than the first sound absorbing material 16, unnecessary sound from the enclosure 11 is reduced. Leakage can be sufficiently suppressed from the low sound range to the high sound range.
  • a sound absorbing material for example, soft urethane foam
  • the band portion 31 is formed in an arch shape as a whole, and each end portion side is curved and configured as an ear hook portion 31 a.
  • the band portion 31 is formed using a material such as a flexible and lightweight resin material having elasticity.
  • the band part 31 is formed so that the space
  • each pressing portion 32 is connected to each end portion of the band portion 31 (an end portion and also a tip end portion of each ear hook portion 31 a).
  • the mounting portion 3 changes the interval between the ear hook portions 31a in the band portion 31 (that is, the interval between the pressing portions 32) to the width of the head 100 or more by the elastic deformation force of the band portion 31 (widening). ) So that it can be freely attached to and detached from the head 100. Further, when the band portion 31 is attached to the head 100, the pair of pressing portions 32 urges the pair of pressing portions 32 in a direction approaching each other by the elastic force thereof. Specifically, the mounting of the mounting portion 3 is maintained by sandwiching a portion (a temple) between the orbit and the ear hole in the temporal region.
  • the pressing portion 32 includes a disc body 41, a main body portion 42, a mounting pin 43, a retaining ring 44, and a spring member 45 as an example.
  • the disc body 41 is formed in a flat disc shape having a constant thickness, a first through hole 41a is formed at the center, and a first engagement portion 41c is formed on the upper surface 41b.
  • the first engagement portion 41c is configured by forming a plurality of protrusions extending along the radial direction of the disc body 41 around the first through hole 41a at equal angular intervals.
  • the first through hole 41 a is formed so that its inner diameter is slightly larger than the outer diameter of a cylindrical pin body 43 a of the mounting pin 43 described later.
  • the main body 42 has a disk-shaped first support wall 51, a disk-shaped second support wall 52, and a peripheral wall that connects the peripheral portions of the support walls 51, 52 leaving a part. 53 and a pad 54.
  • the first support wall 51 is disposed so as to face the upper surface 41b of the disc body 41, and a second through hole 51a having the same diameter as the first through hole 41a is formed at the center. Yes. Further, the first support wall 51 has a second meshing portion 51c that can mesh with the first meshing portion 41c on a surface 51b (the lower surface in the figure) facing the upper surface 41b of the disc body 41.
  • a plurality of recesses extending along the radial direction of the first support wall 51 with the second through hole 51a as a center constitutes an equiangular interval (the first meshing portion 41c is formed). The same angular interval as the protrusions).
  • the 2nd meshing part 51c meshes with the 1st meshing part 41c, when each projection of the 1st meshing part 41c fits into each recessed part.
  • a concave portion 51e having a circular shape in plan view is formed in the central portion of the back surface 51d (upper surface in the drawing) of the facing surface 51b, and the second bottom is formed in the center of the bottom surface of the concave portion 51e.
  • the through hole 51a is opened.
  • the recess 51e has an inner diameter that is slightly larger than the outer diameter of a disk-shaped pin head 43b, which will be described later, of the mounting pin 43, and is configured to accommodate the pin head 43b.
  • the second support wall 52 is disposed to face the bottom surface 41d of the disc body 41, and has the same diameter as the first through hole 41a at the center of the facing surface 52a with the bottom surface 41d.
  • a circular recess 52b is formed.
  • an annular circumferential groove 52c in plan view is formed on the facing surface 52a of the second support wall 52 so as to surround the circular recess 52b.
  • the diameter of the circumferential groove 52c is defined to be the same as the diameter of the coil spring as the spring member 45, and the lower end side of the spring member 45 is configured to be mountable.
  • a pad 54 is attached to the back surface 52d (the lower surface in the figure) of the facing surface 52a of the second support wall 52 (see FIGS. 2, 9, and 10). Since the back surface 52d of the second support wall 52 serves as a contact surface with the temporal region of the head 100 in the pressing portion 32, by attaching a pad 54 made of a material that is flexible and has little pressure to the back surface 52d, The ear speaker device 1 can be comfortably attached. Further, since the mounting portion 3 is configured to be mounted on the head 100 while holding the temporal region between the pair of pressing portions 32 as described above, as the material of the pad 54, the mounting portion 3 slips when contacting the temporal region. Difficult materials (for example, soft rubber and sponge) are used.
  • the peripheral wall 53 includes a first peripheral wall 53 a erected on a part of the peripheral portion of the opposing surface 51 b of the first support wall 51 and a peripheral portion of the opposing surface 52 a of the second support wall 52. It is comprised by the 2nd surrounding wall 53b standingly arranged in a part (part corresponding to the standing part of the 1st surrounding wall 53a in the peripheral part of the opposing surface 51b).
  • the peripheral wall 53 is formed by joining the first peripheral wall 53a and the second peripheral wall 53b.
  • the length of the peripheral wall 53 that is, the distance X1 between the facing surface 51b of the first support wall 51 and the facing surface 52a of the second support wall 52 is, as shown in FIG. It is formed slightly wider than the entire thickness of the disc body 41 including the protruding length of the protrusion of the portion 41c.
  • the surrounding wall 53 employ
  • the 1st support wall 51 and the 2nd support In a state where the wall 52 is integrally connected by the peripheral wall 53, the main body 42 has an inner region (the disc body 41 is surrounded by the inner surfaces of the first support wall 51, the second support wall 52, and the peripheral wall 53.
  • a communication hole B is formed to allow communication between the internal region and the outside of the main body portion 42.
  • the mounting pin 43 includes a cylindrical pin body 43a and a disk having a larger diameter than the pin body 43a formed at the other end (the upper end in the figure) of the pin body 43a. And a pin-shaped pin head 43b.
  • the retaining ring 44 is an E-ring as an example, and is attached to the pin main body 43a to prevent the mounting pin 43 from being detached.
  • the spring member 45 is configured by a coil spring.
  • the pin main body 43 a of the mounting pin 43 is inserted into the second through hole 51 a of the first support wall 51, and It is inserted into the first through hole 41a.
  • the retaining ring 44 is attached to the lower end side of the pin body 43a protruding from the first through hole 41a. Accordingly, the retaining ring 44 prevents the mounting pin 43 from being pulled out, and the first support wall 51 and the disc body 41 are integrated via the mounting pin 43.
  • the spring member 45 is fitted on the distal end side of the pin main body 43a with respect to the attachment portion of the retaining ring 44.
  • the first support wall 43a is inserted into the circular recess 52b of the second support wall 52 and the lower end side of the spring member 45 is attached to the circumferential groove 52c.
  • the second support wall 52 is joined to 51.
  • the assembly of the pressing part 32 is completed.
  • the end of the spring member 45 on the second support wall 52 side is attached to the circumferential groove 52c formed in the second support wall 52, so that the central axis thereof is the axis of the pin main body 43a ( The first axis L1), which will be described later, is maintained so as to be substantially coincident.
  • one end of the support arm 33 is connected to the pressing portion 32 and the other end is connected to the speaker 2, and the speaker 2 is brought into a predetermined position with respect to the position of the pressing portion 32.
  • one end of the support arm 33 is connected to the main body portion 42 that constitutes the pressing portion 32.
  • the other end of the support arm 33 is fixed to the first flange portion 14b constituting the connecting pin 14, so that the speaker 2 is connected via the connecting pin 14 as shown in FIG. Are connected to the cylindrical connecting portion 21.
  • each end portion of the band portion 31 (the tip portion of each ear hook portion 31a) is connected to the main body portion via a connecting member 61 inserted into the communication hole B as shown in FIGS. It is connected to the outer peripheral surface of the disc body 41 in 42.
  • the pressing portion 32 moves the support arm 33 in the direction indicated by the arrow in FIG. 3 around the first axis L1 orthogonal to the back surface 52d of the second support wall 52 that is a contact surface with the temporal region. It is supported so that it can rotate.
  • each ear hooking portion 31a and each pressing portion 32 of the band portion 31 are held by hand, and the band portion 31 is elastically deformed to widen the interval between the pressing portions 32.
  • the mounting portion 3 is mounted such that the head 100 is sandwiched between the ear hook portions 31a.
  • each ear hook 31 a is hooked on the pinna 102.
  • the ear speaker device 1 is attached to the head 100 by holding the temporal portion of the head 100 between the pressing portions 32 by the elastic force of the band portion 31 and catching each ear hooking portion 31a on the auricle 102. Installed.
  • the pad 54 is attached to the contact surface (the back surface 52d of the second support wall 52) of each pressing portion 32 that mainly contacts the head 100, so that there is little feeling of pressure.
  • the ear speaker device 1 can be worn comfortably in the state.
  • each speaker 2 is placed at a predetermined position spaced apart from the listener's ear hole 101 to the side of the head 100.
  • the support arm 33 is rotatable with respect to the band part 31 around the first axis L1 (attachment pin 43) of the pressing part 32. It becomes a state.
  • each speaker 2 is rotated within a rotation range of the support arm 33 around the first axis L1 and moved to a preferred position.
  • the pair of pressing portions 32 sandwich the temporal portion (in this example, the pad 54 made of a material that is more difficult to slip is in contact with the temporal region). Therefore, even if some external force is applied to the ear speaker device 1, the positions of the support arm 33, the pressing portion 32, and the band portion 31 are greatly shifted. The situation has been prevented.
  • the speaker 2 is rotated about the second axis L2 with respect to the support arm 33, and moved to a preferred position among the first position, the second position, and the third position described above, thereby causing the speaker 2 to move. Is placed at a predetermined position.
  • FIG. 1 mounting
  • the speaker unit 12 of each speaker 2 moves from the corresponding ear hole 101 to the head 100.
  • the sound output from the speaker unit 12 can be efficiently heard in a state where the damage to the eardrum is extremely small and the ambient sound can be heard. It is possible to listen (enough sound is heard).
  • the ear speaker device 1 is mounted in a state where the band portion 31 of the mounting portion 3 is positioned on the back of the head 100.
  • the band portion 31 is hung on the top of the head 100.
  • the ear speaker device 1 can be mounted in a state where the pair of pressing portions 32 are in contact with the temporal region, but even in this mounted state, by operating the mounting pins 43 as described above.
  • Each speaker 2 can be moved to an arbitrary position by rotating each support arm 33 with respect to the band portion 31, so that each speaker 2 can be arranged at the predetermined position.
  • each pressing portion 32 is centered on the first axis L ⁇ b> 1 orthogonal to the contact surface (back surface 52 d of the second support wall 52) of the pressing portion 32 with the temporal region.
  • the support arm 33 is configured to be able to rotate.
  • this ear speaker device 1 since the speaker 2 attached to the support arm 33 can be rotated with respect to the pressing portion 32, the speaker 2 can be reliably moved to a predetermined position. In a state where damage to the eardrum is extremely small and ambient sounds can be heard, the sound output from the speaker unit 12 can be efficiently heard (a sufficient sound can be heard).
  • each speaker 2 includes an enclosure 11 whose back side is formed in a semi-elliptical sphere (or a hemisphere), and the sound reflecting material 15 and the sound absorbing materials 16 and 17 are provided inside the enclosure 11.
  • the sound reflecting material 15 and the sound absorbing materials 16 and 17 are provided inside the enclosure 11.
  • the circular holes 16 a that expose the surface of the sound reflecting material 15 to the speaker unit 12 side at the centers of the sound absorbing materials 16 and 17. 17a is formed.
  • the sounds directed in the direction along the axis L3 of the enclosure 11 are each circular hole 16a, 17a.
  • the sound-reflecting material 15 is made to reach, and the sound-reflecting material 15 reflects the sound to the speaker unit 12 side, so that the sound traveling in a direction other than the direction along the axis L3 can be absorbed by the sound-absorbing materials 16 and 17. .
  • the sound that goes in the direction along the axis L3 of the enclosure 11 is output from the front side of the enclosure 11 and is not in the direction along the axis L3.
  • Sound traveling in the direction can be absorbed by the sound absorbing materials 16 and 17.
  • sound is efficiently output to the ear hole 101 in a state where sound directing from the enclosure 11 is small while sufficiently increasing the directivity in the direction of the axis L ⁇ b> 3 of the speaker 2. Therefore, the sound output from the speaker unit 12 can be heard more efficiently.
  • this ear speaker device since the back side of the enclosure 11 of the speaker 2 is formed in a semi-cup shape (semi-elliptical sphere or semi-spherical shape), resonance with sound output from the enclosure 11 hardly occurs, As a result, the frequency characteristic of the speaker 2 becomes closer to a flat state, so that sound can be output with excellent sound quality.
  • the first sound absorbing material 16 and the second sound absorbing material 17 that absorbs sound on the lower frequency side than the first sound absorbing material 16 are provided in the direction from the back of the enclosure 11 toward the speaker unit 12. It is laminated and oriented. Therefore, according to the ear speaker device 1, unnecessary sound leakage from the enclosure 11 can be sufficiently suppressed from the low sound range to the high sound range.
  • each pressing portion 32 includes the disc body 41, the main body portion 42, the mounting pin 43, the retaining ring 44 and the spring member 45 configured as described above. Therefore, the speaker 2 can be positioned at an arbitrary position while allowing the speaker 2 to rotate with respect to the band portion 31 while having a simple structure.
  • each speaker 2 is supported by the support arm 33 so as to be rotatable about the second axis L2 along the length direction of the corresponding support arm 33 (substantially parallel to the length direction). Since the direction of the speaker unit 12 can be finely adjusted because it is connected to the other end of 33, the speaker 2 can be reliably arranged at a predetermined position where the speaker unit 12 faces the direction of the ear hole 101. Thereby, the sound output from the speaker unit 12 can be heard more efficiently.
  • the present invention is not limited to the above configuration.
  • a configuration in which the support arm 33 is connected to the main body portion 42 of the pressing portion 32 and the ear hooking portion 31a of the band portion 31 is connected to the disc body 41 is not illustrated.
  • a configuration in which the ear hooking portion 31 a is connected to the main body portion 42 of the pressing portion 32 and the support arm 33 is connected to the disc body 41 may be employed.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

In order to enable the adequate pickup of sounds with a simple configuration and enable the pickup of ambient sounds, the present invention is equipped with speakers (2), and a mounting part (3), which is mounted on the head (100) of a listener and which positions the speakers (2) at the side of the head (100), at a prescribed position at a distance from the ear canal (101) of the listener. The mounting part (3) has: an elastic, arch-shaped band part (31); a pair of pressing parts (32), which are connected to the tips of the band part (31) and are pressed against the sides of the head (100) by the elastic force of the band part (31) when the band part (31) is mounted on the head (100); and support arms (33), one end of each of which is connected to a pressing part (32), with a speaker (2) connected to the other end, and which support the speakers (2) at the prescribed position. The pressing parts (32) are formed so as to enable rotation of the support arms (33) centered on a first axial line (L1) that is perpendicular with respect to the contact plane between the pressing parts (32) and the sides of the head.

Description

イヤースピーカ装置Ear speaker device
 本発明は、頭部に装着される頭部装着型のイヤースピーカ装置に関するものである。 The present invention relates to a head-mounted ear speaker device mounted on the head.
 携帯式のオーディオプレーヤ等で個人的に音楽を楽しむためのヘッドホンとして、ヘッドバンドを介して耳介を覆うように装着されるオーバーヘッド型のもの、耳介に引っ掛けて装着されるイヤーフィット型のもの、耳穴に直接挿入するインナーイヤー型のもの等が知られている。 Headphones for personal enjoyment of music with a portable audio player, etc. Overhead type headphones that are worn so as to cover the auricles via a headband, and ear fit type headphones that are worn by hooking on the auricles An inner ear type or the like that is directly inserted into the ear hole is known.
 近年、こうしたヘッドホンを利用して長時間にわたり音楽を聴取したことによる難聴(ヘッドホン難聴)が問題になっている。この点、下記特許文献1に開示されているヘッドホンは、鼓膜への直接的な刺激を避けるため、スピーカユニットを耳穴の入口正面から外れた位置に設けるようにしている。しかし、このヘッドホンは、オーバーヘッド型のヘッドホンと同様に耳介全体をイヤーパッドで覆い、イヤーパッドで囲まれる空間に音場を形成するようにしている。このため、周囲音が聞こえにくく、安全性に課題がある。 Recently, hearing loss (headphone deafness) due to listening to music for a long time using such headphones has become a problem. In this regard, in the headphones disclosed in Patent Document 1 below, in order to avoid direct irritation to the eardrum, the speaker unit is provided at a position away from the entrance front of the ear hole. However, this headphone covers the entire auricle with an ear pad in the same manner as an overhead type headphone so as to form a sound field in a space surrounded by the ear pad. For this reason, it is difficult to hear ambient sounds, and there is a problem in safety.
 また、この特許文献1に開示されているヘッドホンには、スピーカユニットを耳穴から離れた位置に配設させる構成に起因して、音が耳穴に到達し難いため、十分なレベルの音を聴取させ得ないという課題も存在している。この課題を解決するため、下記特許文献2に開示されているイヤースピーカ装置では、スピーカを構成する筐体部に管状ダクトを取り付ける構成を採用して、スピーカを構成するスピーカユニットをリスナの頭部における耳介よりもやや前方に位置させると共に、管状ダクトを耳穴の近傍に延長して孔部を形成している。このイヤースピーカ装置によれば、耳穴からやや離れた位置にあるスピーカユニットから再生音の中高音を放射すると共に、バスレフダクトとして機能する管状ダクトの孔部から再生音の中高音を低減させた低音を放射することにより、十分な低音を含む良好な再生音をリスナに聴取させることが可能となっている。また、このイヤースピーカ装置は、耳介全体をイヤーパッドで覆う構成ではないため、周囲音が聞こえ難いという課題についても解消されている。 In addition, the headphones disclosed in Patent Document 1 have a structure in which the speaker unit is arranged at a position away from the ear hole, so that it is difficult for the sound to reach the ear hole. There is also a problem that it cannot be obtained. In order to solve this problem, the ear speaker device disclosed in Patent Document 2 below employs a configuration in which a tubular duct is attached to a casing portion that constitutes the speaker, and the speaker unit that constitutes the speaker is connected to the head of the listener. Is positioned slightly forward of the auricle, and the tubular duct is extended near the ear hole to form a hole. According to this ear speaker device, the mid-high sound of the reproduced sound is emitted from the speaker unit located slightly away from the ear hole, and the medium-high sound of the reproduced sound is reduced from the hole of the tubular duct functioning as a bass reflex duct. By radiating the sound, it is possible to make the listener listen to a good reproduction sound including a sufficiently low sound. Moreover, since this ear speaker device is not configured to cover the entire auricle with an ear pad, the problem that it is difficult to hear ambient sounds is also solved.
特許第3054295号公報(第3頁、第1図)Japanese Patent No. 3054295 (page 3, Fig. 1) 特開2007-235929号公報(第5-8頁、第5図)JP 2007-235929 (page 5-8, FIG. 5)
 ところが、上記の特許文献2に開示されているイヤースピーカ装置には、以下のような解決すべき課題が存在している。すなわち、このイヤースピーカ装置では、スピーカの筐体部に管状ダクトを取り付ける構成を採用している。したがって、イヤースピーカ装置には、管状ダクトを取り付ける分だけ構造が複雑になるという課題が存在すると共に、装着状態において手を触れるなどしてスピーカが若干揺れた際に、耳穴の近傍にまで延出する管状ダクトの先端が耳に触れることがあるため、装着感に難点があるという課題が存在している。 However, the ear speaker device disclosed in Patent Document 2 has the following problems to be solved. That is, this ear speaker device employs a configuration in which a tubular duct is attached to the housing of the speaker. Therefore, the ear speaker device has a problem that the structure becomes complicated as much as the tubular duct is attached, and when the speaker is slightly shaken by touching the hand in the mounted state, it extends to the vicinity of the ear hole. Since the tip of the tubular duct that touches the ear may touch the ear, there is a problem that the wearing feeling is difficult.
 本発明は、かかる課題を改善するためになされたものであり、簡易な構成でありながら十分な音を聴取可能にしつつ、周囲音についても聴取し得るイヤースピーカ装置を提供することを主目的とする。 The present invention has been made in order to improve such a problem, and it is a main object of the present invention to provide an ear speaker device capable of listening to ambient sounds while being able to listen to sufficient sounds with a simple configuration. To do.
 上記目的を達成すべく請求項1記載のイヤースピーカ装置は、スピーカ、および聴取者の頭部に装着されると共に前記スピーカを前記聴取者の耳穴から当該頭部の側方に離間した所定位置に配置させる装着部を備え、前記装着部は、弾性を有するアーチ状のバンド部と、当該バンド部の各先端部に連結されて当該バンド部が前記頭部に装着された際に当該バンド部の弾性力によって前記頭部の側頭部に押し付けられる一対の押付部と、一端が前記押付部に連結されると共に他端に前記スピーカが連結されて当該スピーカを前記所定位置に支持する支持アームとを有し、前記押付部は、当該押付部における前記側頭部との接触面に対して直交する第1軸線を中心とする前記支持アームの回動を可能に構成されている。 In order to achieve the above object, an ear speaker device according to claim 1 is mounted on a speaker and a listener's head, and the speaker is placed at a predetermined position away from the ear hole of the listener to the side of the head. A mounting portion to be arranged, and the mounting portion is connected to each tip portion of the band portion and an arch-shaped band portion having elasticity, and when the band portion is mounted on the head portion, A pair of pressing portions pressed against the temporal portion of the head by elastic force; a support arm having one end connected to the pressing portion and the other end connected to the speaker to support the speaker in the predetermined position; The pressing portion is configured to be capable of rotating the support arm about a first axis perpendicular to a contact surface with the temporal portion of the pressing portion.
 請求項2記載のイヤースピーカ装置は、請求項1記載のイヤースピーカ装置において、前記スピーカは、スピーカユニット、および前面に前記スピーカユニットが取り付けられると共に背面側が半カップ状に形成されて前記支持アームの前記他端に連結されたエンクロージャを備え、当該エンクロージャの内部に音反射材および音吸収材が当該エンクロージャの奥部側から前記スピーカユニットに向けてこの順に積層されると共に、前記音吸収材の中心に前記音反射材の表面を当該スピーカユニット側に露出させる孔が形成されている。 The ear speaker device according to claim 2 is the ear speaker device according to claim 1, wherein the speaker includes a speaker unit, the speaker unit is attached to the front surface, and the back side is formed in a semi-cup shape. An enclosure connected to the other end, and a sound reflecting material and a sound absorbing material are laminated inside the enclosure from the back side of the enclosure toward the speaker unit in this order, and the center of the sound absorbing material A hole for exposing the surface of the sound reflecting material to the speaker unit side is formed.
 請求項3記載のイヤースピーカ装置は、請求項2記載のイヤースピーカ装置において、前記音吸収材は、第1音吸収材と、当該第1音吸収材よりも低域側の音を吸収する第2音吸収材とが前記エンクロージャの奥部側から前記スピーカユニットに向けて積層されて構成されている。 The ear speaker device according to claim 3 is the ear speaker device according to claim 2, wherein the sound absorbing material absorbs sound on a lower frequency side than the first sound absorbing material and the first sound absorbing material. A two-sound absorber is laminated from the back side of the enclosure toward the speaker unit.
 請求項4記載のイヤースピーカ装置は、請求項1から3のいずれかに記載のイヤースピーカ装置において、前記押付部は、中心に第1貫通孔が形成されると共に上面に第1噛合部が形成された偏平な円板体と、前記円板体の前記上面に対向して配設されると共に中心に第2貫通孔が形成され、かつ当該円板体の当該上面との対向面に前記第1噛合部と噛合可能な第2噛合部が形成された円板状の第1支持壁、当該円板体の底面に対向して配設されると共に当該円板体の当該底面との対向面の中心に円形凹部が形成された円板状の第2支持壁および前記各支持壁の周縁部分を一部を残して連結する周壁を有する本体部と、前記第1貫通孔および前記第2貫通孔を貫通すると共に一方の端部が前記円形凹部内に挿入され、かつ他方の端部が前記第1支持壁から突出した状態で配設されたピン本体、および当該ピン本体の前記他方の端部に形成されたピン頭部を有する取付ピンと、前記ピン本体の外周面における前記円板体と前記第2支持壁との間に位置する部位に装着されて、前記取付ピンの抜脱を防止する抜け止めリングと、前記第2支持壁と前記抜け止めリングとの間に配設されて、当該第2支持壁に対して当該抜け止めリングを当該抜け止めリングが装着された前記取付ピンおよび当該抜け止めリングと当接する前記円板体と共に前記第1支持壁側に向けて常時付勢するバネ部材とを備え、前記バンド部の前記先端部は、前記押付部における前記本体部および前記円板体のいずれか一方に連結され、前記支持アームの前記一端は、前記押付部における前記本体部および前記円板体のいずれか他方に連結されている。 The ear speaker device according to claim 4 is the ear speaker device according to any one of claims 1 to 3, wherein the pressing portion has a first through hole formed at the center and a first engagement portion formed on the upper surface. A flat disc body, a second through hole is formed at the center of the disc body and opposed to the upper surface of the disc body, and the second surface is opposed to the upper surface of the disc body. A disk-shaped first support wall formed with a second meshing portion that can mesh with the first meshing portion, a surface facing the bottom surface of the disk body and facing the bottom surface of the disk body A disc-shaped second support wall having a circular recess formed at the center thereof, a main body having a peripheral wall for connecting a peripheral portion of each of the support walls leaving a part thereof, the first through-hole and the second through-hole Penetrates the hole and one end is inserted into the circular recess, and the other end is 1 a pin body disposed in a state of protruding from the support wall, a mounting pin having a pin head formed at the other end of the pin body, the disk body on the outer peripheral surface of the pin body, and the pin body A retaining ring that is attached to a portion located between the second support wall and prevents the mounting pin from being pulled out, and disposed between the second support wall and the retaining ring, A spring that constantly urges the retaining ring toward the first supporting wall side together with the mounting pin on which the retaining ring is mounted and the disc body that contacts the retaining ring with respect to the second supporting wall. A member, and the distal end portion of the band portion is connected to one of the main body portion and the disc body in the pressing portion, and the one end of the support arm is connected to the main body portion in the pressing portion and The disc It is connected to the other of the.
 請求項5記載のイヤースピーカ装置は、請求項1から4のいずれかに記載のイヤースピーカ装置において、前記スピーカは、前記支持アームの長さ方向に沿った第2軸線を中心として回動自在に当該支持アームの前記他端に連結されている。 The ear speaker device according to claim 5 is the ear speaker device according to any one of claims 1 to 4, wherein the speaker is rotatable about a second axis along a length direction of the support arm. It is connected to the other end of the support arm.
 請求項1記載のイヤースピーカ装置によれば、各押付部が第1軸線を中心とする支持アームの回動を可能に構成されているため、支持アームに取り付けられたスピーカを押付部に対して回動させて所定位置に確実に移動させることができることから、鼓膜に与えるダメージが極めて少ない状態で、かつ周囲音が聞き取れる状態で、しかもスピーカから出力される音を効率よく聴取する(十分な音を聴取する)ことができる。 According to the ear speaker device of the first aspect, since each pressing portion is configured to be capable of rotating the support arm around the first axis, the speaker attached to the support arm can be connected to the pressing portion. Since it can be rotated and moved to a specified position, the sound that is output from the speaker can be heard efficiently with very little damage to the eardrum and the ability to hear the surrounding sound. Can be heard).
 請求項2記載のイヤースピーカ装置では、スピーカが、半カップ状に形成されたエンクロージャの内部に音反射材および吸音材がエンクロージャの奥部側からスピーカユニット方向に向けて積層されると共に、吸音材の中心に音反射材の表面をスピーカユニット側に露出させる孔が形成されて構成されている。 The ear speaker device according to claim 2, wherein a sound reflecting material and a sound absorbing material are laminated from the back side of the enclosure toward the speaker unit inside the enclosure formed in a semi-cup shape. Is formed with a hole for exposing the surface of the sound reflecting material to the speaker unit side.
 したがって、このイヤースピーカ装置によれば、スピーカユニットからその背面側に出力される音のうち、エンクロージャの軸線に沿った方向に向かう音については、吸音材の孔を介して音反射材に到達させると共に音反射材によってスピーカユニット側に反射させ、軸線に沿った方向以外の方向に向かう音については吸音材で吸収することができる。また、音反射材によってスピーカユニット側に反射される音のうち、エンクロージャの軸線に沿った方向に向かう音についてはエンクロージャの正面側から出力させ、軸線に沿った方向以外の方向に向かう音については吸音材で吸収することができる。これにより、このイヤースピーカ装置によれば、スピーカの軸線の方向への指向性を十分に高めつつ、エンクロージャからの音漏れの少ない状態で、効率よく耳穴に音を出力することができるため、スピーカユニットから出力される音を一層効率よく聴取することができる。また、このイヤースピーカ装置によれば、スピーカのエンクロージャにおける背面側が半カップ状に形成されているため、エンクロージャから出力される音に対する共振が生じにくく、これによってスピーカの周波数特性がよりフラットに近い状態になるため、優れた音質で音を出力することができる。 Therefore, according to this ear speaker device, of the sound output from the speaker unit to the back side thereof, the sound traveling in the direction along the axis of the enclosure is caused to reach the sound reflecting material through the hole of the sound absorbing material. At the same time, it is reflected by the sound reflecting material to the speaker unit side, and the sound traveling in a direction other than the direction along the axis can be absorbed by the sound absorbing material. Of the sound reflected by the sound reflecting material to the speaker unit side, the sound that goes in the direction along the axis of the enclosure is output from the front side of the enclosure, and the sound that goes in the direction other than the direction along the axis Can be absorbed by sound absorbing material. Thereby, according to this ear speaker device, sound can be efficiently output to the ear hole in a state where the directivity in the direction of the axis of the speaker is sufficiently enhanced and sound leakage from the enclosure is small. The sound output from the unit can be heard more efficiently. Further, according to this ear speaker device, since the back side of the speaker enclosure is formed in a semi-cup shape, resonance with the sound output from the enclosure is less likely to occur, so that the frequency characteristics of the speaker are more flat. Therefore, it is possible to output sound with excellent sound quality.
 請求項3記載のイヤースピーカ装置によれば、第1吸音材と、第1吸音材よりも低域側の音を吸収する第2吸音材とがエンクロージャの奥部側からスピーカユニット方向に向けて積層されて構成されているため、エンクロージャからの不要な音の漏れ出しを低音域から高音域に亘って十分に抑制することができる。 According to the ear speaker device of the third aspect, the first sound absorbing material and the second sound absorbing material that absorbs the sound on the lower frequency side than the first sound absorbing material are directed from the back side of the enclosure toward the speaker unit. Since it is configured to be laminated, it is possible to sufficiently suppress leakage of unnecessary sound from the enclosure from the low sound range to the high sound range.
 請求項4記載のイヤースピーカ装置によれば、押付部が、円板体、本体部、取付ピン、抜け止めリングおよびバネ部材を備えて構成されているため、簡単な構造でありながら、バンド部に対するスピーカの回動を可能としつつ、スピーカを任意の位置で位置決めすることができる。 According to the ear speaker device of claim 4, the pressing portion is configured to include the disc body, the main body portion, the mounting pin, the retaining ring, and the spring member, and thus the band portion is simple in structure. The speaker can be positioned at an arbitrary position while allowing the speaker to be rotated with respect to.
 請求項5記載のイヤースピーカ装置によれば、スピーカが支持アームの長さ方向に沿った第2軸線を中心として回動自在に支持アームに連結されているため、スピーカの向きを微調整することができることから、スピーカが耳穴の方向に向く所定位置にスピーカを確実に配置することができる。これにより、スピーカから出力される音をより一層効率よく聴取することができる。 According to the ear speaker device of the fifth aspect, since the speaker is connected to the support arm so as to be rotatable about the second axis along the length direction of the support arm, the direction of the speaker can be finely adjusted. Therefore, the speaker can be surely arranged at a predetermined position where the speaker faces the direction of the ear hole. Thereby, the sound output from the speaker can be heard even more efficiently.
イヤースピーカ装置1の構成および頭部100への装着状態を説明するための説明図である。FIG. 3 is an explanatory diagram for explaining a configuration of the ear speaker device 1 and a mounting state on the head 100. イヤースピーカ装置1の構成を説明するための斜視図である。1 is a perspective view for explaining a configuration of an ear speaker device 1. FIG. イヤースピーカ装置1のバンド部31、押付部32、支持アーム33およびスピーカ2の拡大図である。3 is an enlarged view of a band unit 31, a pressing unit 32, a support arm 33, and a speaker 2 of the ear speaker device 1. FIG. スピーカ2の構造を説明するための分解断面図である。4 is an exploded cross-sectional view for explaining the structure of the speaker 2. FIG. スピーカ2の内部構造を説明するための図2におけるW2-W2線断面図である。FIG. 3 is a cross-sectional view taken along line W2-W2 in FIG. 2 for explaining the internal structure of the speaker 2. スピーカ2の円筒状連結部21の内部構造を説明するための図5におけるW3-W3線断面図である。FIG. 6 is a cross-sectional view taken along line W3-W3 in FIG. 5 for explaining the internal structure of the cylindrical connecting portion 21 of the speaker 2. スピーカ2の円筒状連結部21の内部構造と連結ピン14の構造とを説明するための図5におけるW4-W4線断面図である。FIG. 6 is a cross-sectional view taken along line W4-W4 in FIG. 5 for explaining the internal structure of the cylindrical connecting portion 21 of the speaker 2 and the structure of the connecting pin 14; 連結ピン14を第2フランジ部14c側から見た図である。It is the figure which looked at the connecting pin 14 from the 2nd flange part 14c side. 押付部32の分解斜視図である。4 is an exploded perspective view of a pressing part 32. FIG. 第1噛合部41cおよび第2噛合部51cが噛合状態のときの押付部32の内部構造を説明するための図3におけるW1-W1線断面図である。FIG. 4 is a cross-sectional view taken along line W1-W1 in FIG. 3 for explaining the internal structure of the pressing portion 32 when the first meshing portion 41c and the second meshing portion 51c are meshed. 第1噛合部41cおよび第2噛合部51cの噛合状態が解除されているときの押付部32の内部構造を説明するための図3におけるW1-W1線断面図である。FIG. 4 is a cross-sectional view taken along line W1-W1 in FIG. 3 for explaining the internal structure of the pressing portion 32 when the meshing state of the first meshing portion 41c and the second meshing portion 51c is released.
 以下、イヤースピーカ装置の実施の形態について、添付図面を参照して説明する。 Hereinafter, embodiments of the ear speaker device will be described with reference to the accompanying drawings.
 最初に、イヤースピーカ装置1の構成について、図面を参照して説明する。 First, the configuration of the ear speaker device 1 will be described with reference to the drawings.
 イヤースピーカ装置1は、図1,2に示すように、スピーカ2(本例では、一対のスピーカ2,2)、および装着部3を備え、聴取者の頭部100に装着された状態において、不図示のイヤホンジャックから入力された音響信号を各スピーカ2において音に変換して出力する。 As shown in FIGS. 1 and 2, the ear speaker device 1 includes a speaker 2 (in this example, a pair of speakers 2 and 2) and a mounting unit 3, and is mounted on the listener's head 100. An acoustic signal input from an unillustrated earphone jack is converted into sound at each speaker 2 and output.
 各スピーカ2は、図1,2,4,5に示すように、エンクロージャ11、スピーカユニット12、スピーカカバー13、連結ピン14、音反射材15、1または2以上の吸音材(本例では、第1吸音材16および第2吸音材17の2つの吸音材)をそれぞれ備えて同一に構成されて、装着部3を構成する後述の一対の支持アーム33のうちの対応する支持アーム33に連結ピン14を介して第2軸線L2を中心として回動自在にそれぞれ連結されている(図1,3,5参照)。 As shown in FIGS. 1, 2, 4 and 5, each speaker 2 includes an enclosure 11, a speaker unit 12, a speaker cover 13, a connecting pin 14, a sound reflecting material 15, one or more sound absorbing materials (in this example, Two sound absorbing materials of the first sound absorbing material 16 and the second sound absorbing material 17), which are configured in the same manner and connected to the corresponding support arm 33 of a pair of support arms 33 described later constituting the mounting portion 3. The pins 14 are connected to each other so as to be rotatable about the second axis L2 (see FIGS. 1, 3 and 5).
 具体的には、エンクロージャ11は、図4,5に示すように、前面(同図の右側面)が円形に開口すると共に、背面側(同図の左面側)が半カップ状(例えば、半球状または半楕円球状(本例では、一例として半楕円球状))に形成されて構成されている。また、エンクロージャ11の外面には、スピーカカバー13の外面に形成された後述の半円筒部13dと結合することにより、連結ピン14が収容される円筒状連結部21(図5,6,7参照)を構成する半円筒部11aが形成されている。 Specifically, as shown in FIGS. 4 and 5, the enclosure 11 has a front surface (the right side surface in the figure) opened in a circular shape, and the back side (the left surface side in the figure) has a semi-cup shape (for example, a hemisphere). Or a semi-elliptical sphere (in this example, a semi-elliptical sphere as an example). Further, the outer surface of the enclosure 11 is coupled to a later-described semi-cylindrical portion 13 d formed on the outer surface of the speaker cover 13, so that a cylindrical coupling portion 21 (see FIGS. 5, 6 and 7) in which the coupling pin 14 is accommodated. ) Is formed.
 この場合、半楕円球状に形成されているエンクロージャ11の軸線をL3としたときに、本例では、一例として上記の円筒状連結部21の中心軸(上記の第2軸線L2と一致する軸。以下、中心軸L2ともいう)が軸線L3と直交するように、半円筒部11aがエンクロージャ11の外面に起立した状態で形成されている。また、半円筒部11aの内面には、平面視が長方形状の第1リブ部11b(図7参照)および半円環状の第2リブ部11c(図6参照)が、図4に示すように、エンクロージャ11の中心(軸線L3)側から離間する方向に向けてこの順に、かつ上記の中心軸L2と直交する互いに異なる平面内に位置する状態で形成されている。また、第2リブ部11cには、図4,5,6に示すように、複数の係合孔(本例では、一例として、図6に示すように3つの係合孔11d,11e,11f)が中心軸L2を中心とした同心円上に等角度間隔(例えば、約15度間隔)で形成されている。 In this case, when the axis of the enclosure 11 formed in a semi-elliptical spherical shape is L3, in this example, as an example, the central axis of the cylindrical connecting portion 21 (an axis that coincides with the second axis L2). Hereinafter, the semi-cylindrical portion 11a is formed upright on the outer surface of the enclosure 11 so that the central axis L2) is orthogonal to the axis L3. Further, on the inner surface of the semi-cylindrical portion 11a, as shown in FIG. 4, there are a first rib portion 11b (see FIG. 7) and a semi-annular second rib portion 11c (see FIG. 6) having a rectangular shape in plan view. These are formed in this order in a direction away from the center (axis line L3) side of the enclosure 11 and in a state where they are located in different planes orthogonal to the central axis L2. Further, as shown in FIGS. 4, 5, and 6, the second rib portion 11c has a plurality of engagement holes (in this example, as an example, three engagement holes 11d, 11e, and 11f as shown in FIG. 6). ) Are formed at equiangular intervals (for example, at intervals of about 15 degrees) on concentric circles centered on the central axis L2.
 スピーカユニット12は、音が出力される正面側がエンクロージャ11の前面側に位置するようにエンクロージャ11の前面に取り付けられている。つまり、スピーカユニット12からスピーカカバー13に向けて音が出力されるように取り付けられている。この場合、スピーカユニット12は、スピーカユニット12の中心軸が軸線L3と一致する状態でエンクロージャ11に取り付けられている。また、スピーカユニット12には、中心軸方向に向けての指向性の強いスピーカユニットが使用されている。 The speaker unit 12 is attached to the front surface of the enclosure 11 so that the front side from which sound is output is located on the front side of the enclosure 11. That is, it is attached so that sound is output from the speaker unit 12 toward the speaker cover 13. In this case, the speaker unit 12 is attached to the enclosure 11 with the central axis of the speaker unit 12 coinciding with the axis L3. The speaker unit 12 is a speaker unit having high directivity toward the central axis direction.
 スピーカカバー13は、一例として、エンクロージャ11における開口部分の直径と同径に形成された円筒体13aと、円筒体13aの前面(同図の右側面)側の開口部分を覆うようにして形成されると共に数多くの貫通孔Aが形成されたカバー部13bと、円筒体13aの前面における周縁部分に全周に亘って延出して形成されたフード部13cとを備えている。この場合、フード部13cは、円筒体13aの前面から均一な長さで延出させる不図示の構成を採用することもできるが、本例では、スピーカユニット12から出力された音を聴取者の頭部100側に指向するように、頭部100に近接する側(図4,5中の上側。後述の半円筒部13d側)よりも、頭部100から離間する側(図4,5中の下側)をより長く延出させる構成を採用している。また、スピーカカバー13の外面には、半円筒部11aと結合することにより、上記の円筒状連結部21を構成する半円筒部13dが形成されている。 As an example, the speaker cover 13 is formed so as to cover the cylindrical body 13a formed to have the same diameter as the diameter of the opening in the enclosure 11, and the opening on the front surface (right side surface in the figure) of the cylindrical body 13a. And a cover portion 13b in which a large number of through-holes A are formed, and a hood portion 13c formed so as to extend over the entire periphery at the peripheral portion of the front surface of the cylindrical body 13a. In this case, the hood portion 13c can adopt a configuration (not shown) that extends from the front surface of the cylindrical body 13a with a uniform length, but in this example, the sound output from the speaker unit 12 is received by the listener. The side farther from the head 100 (in FIGS. 4 and 5) than the side closer to the head 100 (upper side in FIGS. 4 and 5, the semi-cylindrical part 13 d side described later) so as to be directed toward the head 100 side. The lower side is extended longer. Further, the outer surface of the speaker cover 13 is formed with a semi-cylindrical portion 13d constituting the above-described cylindrical connecting portion 21 by being coupled to the semi-cylindrical portion 11a.
 この場合、上記の円筒状連結部21の中心軸L2が円筒体13aの軸線(エンクロージャ11の軸線L3と同軸)と直交するように、半円筒部13dが円筒体13aの外面に起立した状態で形成されている。また、半円筒部13dの内面には、平面視が長方形状の第3リブ部13eおよび半円環状の第4リブ部13fが、円筒体13aの中心(軸線)側から離間する方向に向けてこの順に、かつ上記の中心軸L2と直交する互いに異なる平面(第3リブ部13eは第1リブ部11bと同じ平面、第4リブ部13fは第2リブ部11cと同じ平面)内に位置する状態で形成されている。また、第4リブ部13fには、図4,5,6に示すように、複数の係合孔(本例では、一例として、図6に示すように、3つの係合孔13g,13h,13i)が中心軸L2を中心とした同心円上に係合孔11d,11e,11fと同じ角度間隔で形成されている。この場合、中心軸L2を中心として、係合孔13gと係合孔11fとが点対称の位置に配置され、係合孔13hと係合孔11eとが点対称の位置に配置され、係合孔13iと係合孔11dとが点対称の位置に配置されている。 In this case, the semi-cylindrical portion 13d stands on the outer surface of the cylindrical body 13a so that the central axis L2 of the cylindrical connecting portion 21 is orthogonal to the axis of the cylindrical body 13a (coaxial with the axial line L3 of the enclosure 11). Is formed. Further, on the inner surface of the semi-cylindrical portion 13d, a third rib portion 13e having a rectangular shape in plan view and a fourth rib portion 13f having a semi-annular shape are directed in a direction away from the center (axis) side of the cylindrical body 13a. In this order, they are located in different planes orthogonal to the central axis L2 (the third rib portion 13e is the same plane as the first rib portion 11b, and the fourth rib portion 13f is the same plane as the second rib portion 11c). It is formed in a state. In addition, as shown in FIGS. 4, 5, and 6, the fourth rib portion 13 f has a plurality of engagement holes (in this example, as an example, as shown in FIG. 6, three engagement holes 13 g, 13 h, 13i) are formed on the concentric circle centering on the central axis L2 at the same angular intervals as the engagement holes 11d, 11e, 11f. In this case, the engagement hole 13g and the engagement hole 11f are arranged at a point-symmetrical position around the central axis L2, and the engagement hole 13h and the engagement hole 11e are arranged at a point-symmetrical position to engage with each other. The hole 13i and the engagement hole 11d are arranged at point-symmetric positions.
 以上の構成により、図5に示すように、エンクロージャ11にスピーカカバー13が装着された状態では、エンクロージャ11の半円筒部11aとスピーカカバー13の半円筒部13dとが接合することによって全体として上記の円筒状連結部21が構成される。また、この状態において、半円筒部11aに形成されている半円環状の第2リブ部11cおよび半円筒部13dに形成されている半円環状の第4リブ部13fも図6に示すように互いに接合して、全体として1つの円環状のリブ部22を構成する。 With the above configuration, as shown in FIG. 5, when the speaker cover 13 is attached to the enclosure 11, the semicylindrical portion 11 a of the enclosure 11 and the semicylindrical portion 13 d of the speaker cover 13 are joined to each other as a whole. The cylindrical connecting portion 21 is configured. In this state, the semicircular second rib portion 11c formed in the semicylindrical portion 11a and the semicircular fourth rib portion 13f formed in the semicylindrical portion 13d are also shown in FIG. They are joined together to form one annular rib portion 22 as a whole.
 連結ピン14は、図4に示すように、外径が円形孔22aの直径よりも若干小径に形成された円柱状のピン本体部14a、ピン本体部14aの一端部(同図中の上端)における外周面に形成された円環状の第1フランジ部14b、ピン本体部14aの他端部(同図中の下端)における外周面に形成された円環状の第2フランジ部14c、ピン本体部14aの長さ方向に沿った中間部の外周面に形成された円環状の第3フランジ部14d、第2フランジ部14cの第3フランジ部14dとの対向面における中心軸(ピン本体部14aの中心軸)を中心とした同心円(係合孔11d等や係合孔13gが形成された円と同径の円)上であって、かつこの中心軸を基準とした点対称の位置に突設された一対の係合突起14e、図7,8に示すように第2フランジ部14cにおける各係合突起14eの内側に中心軸を中心とした同心円上に位置する状態で形成された一対の弧状スリット部14f、および第2フランジ部14cの各係合突起14eが形成された面(上記の対向面)の背面に各弧状スリット部14fの周方向に沿った両口縁部位に立設された4つのストッパピン14gを備えている。また、ピン本体部14aの中央には、中心線方向に沿って貫通する挿通孔14hが形成されている。この挿通孔14hには、イヤホンジャックから入力された音響信号をスピーカユニット12に伝達するための不図示のケーブルが挿通される。 As shown in FIG. 4, the connecting pin 14 has a cylindrical pin body portion 14a having an outer diameter slightly smaller than the diameter of the circular hole 22a, and one end portion of the pin body portion 14a (the upper end in the figure). An annular first flange portion 14b formed on the outer peripheral surface of the pin, an annular second flange portion 14c formed on the outer peripheral surface of the other end portion (lower end in the figure) of the pin main body portion 14a, and a pin main body portion. The central axis (the pin main body portion 14a of the pin main body portion 14a) on the surface of the annular third flange portion 14d formed on the outer peripheral surface of the intermediate portion along the length direction of 14a and the third flange portion 14d of the second flange portion 14c. On a concentric circle centered on the central axis (a circle having the same diameter as the circle in which the engagement hole 11d and the engagement hole 13g are formed) and projecting at a point-symmetrical position with respect to the central axis A pair of engaged projections 14e, as shown in FIGS. A pair of arcuate slit portions 14f formed in a state of being concentrically centered about the central axis and the respective engaging projections 14e of the second flange portion 14c are formed inside the respective engaging projections 14e in the two flange portions 14c. Four stopper pins 14g are provided on the back surface of the above-described surface (the above-described facing surface), and are provided upright at both edge portions along the circumferential direction of each arcuate slit portion 14f. Further, an insertion hole 14h penetrating along the center line direction is formed in the center of the pin main body portion 14a. A cable (not shown) for transmitting an acoustic signal input from the earphone jack to the speaker unit 12 is inserted into the insertion hole 14h.
 また、この連結ピン14では、第2フランジ部14cの板厚(ピン本体部14aの中心軸方向に沿った厚み)は、円筒状連結部21内に形成されるリブ部22と、第1リブ部11b(および第3リブ部13e)との間の距離よりも若干薄く形成されている。また、一の弧状スリット部14fの両端に形成されている一対のストッパピン14gの間隔は、図7に示すように、第1リブ部11bの幅(第3リブ部13eの幅と同一)よりも幅広に形成されている。 Moreover, in this connection pin 14, the plate | board thickness (thickness along the central-axis direction of the pin main-body part 14a) of the 2nd flange part 14c is the rib part 22 formed in the cylindrical connection part 21, and a 1st rib. It is formed slightly thinner than the distance between the portion 11b (and the third rib portion 13e). Further, as shown in FIG. 7, the distance between the pair of stopper pins 14g formed at both ends of one arcuate slit portion 14f is greater than the width of the first rib portion 11b (same as the width of the third rib portion 13e). Is also formed wide.
 以上の構成を備えた連結ピン14は、図5に示すように、ピン本体部14aがリブ部22の中心に形成される円形孔22aを貫通し、かつ第1リブ部11b(および第3リブ部13e)とリブ部22(第2リブ部11cと第4リブ部13f)との間に第2フランジ部14cが収容され、かつ半円筒部11aにおける第2リブ部11cの上側領域(半円筒部13dにおける第4リブ部13fの上側領域でもある)内に第3フランジ部14dが収容され、かつ図7に示すように、一の弧状スリット部14fの両口縁部に形成されている一対のストッパピン14gの間に第1リブ部11bが配設され、かつ他の一の弧状スリット部14fの両口縁部に形成されている一対のストッパピン14gの間に第3リブ部13eが配設された状態で円筒状連結部21に、ピン本体部14aの中心軸が円筒状連結部21の中心軸L2に一致した状態で装着されている。 As shown in FIG. 5, the connecting pin 14 having the above configuration has a pin body portion 14 a that passes through a circular hole 22 a formed at the center of the rib portion 22, and the first rib portion 11 b (and the third rib). Portion 13e) and rib portion 22 (second rib portion 11c and fourth rib portion 13f), second flange portion 14c is accommodated, and upper region (half-cylinder) of second rib portion 11c in semi-cylindrical portion 11a The third flange portion 14d is accommodated in the upper portion of the fourth rib portion 13f in the portion 13d) and, as shown in FIG. 7, a pair formed on both edge portions of one arcuate slit portion 14f. The first rib portion 11b is disposed between the stopper pins 14g, and the third rib portion 13e is formed between the pair of stopper pins 14g formed at both edge portions of the other arcuate slit portion 14f. Cylindrical ream in the installed state The section 21, the central axis of the pin body portion 14a is mounted in a state that matches the central axis L2 of the cylindrical connecting portion 21.
 また、連結ピン14は、円筒状連結部21内において中心軸L2を中心として回動可能であり、第2フランジ部14cに形成された2つの係合突起14eのうちの一方の係合突起14eが半円筒部11aの第2リブ部11cに形成された係合孔11d内に進入して係合し、かつ他方の係合突起14eが半円筒部13dの第4リブ部13fに形成された係合孔13i内に進入して係合する第1位置と、一方の係合突起14eが第2リブ部11cに形成された係合孔11e内に進入して係合し、かつ他方の係合突起14eが第4リブ部13fに形成された係合孔13h内に進入して係合する第2位置と、一方の係合突起14eが第2リブ部11cに形成された係合孔11f内に進入して係合し、かつ他方の係合突起14eが第4リブ部13fに形成された係合孔13g内に進入して係合する第3位置の3つの位置において、位置決めされる。 Further, the connecting pin 14 is rotatable around the central axis L2 in the cylindrical connecting portion 21, and one of the two engaging protrusions 14e formed on the second flange portion 14c is the engaging protrusion 14e. Enters the engagement hole 11d formed in the second rib portion 11c of the semi-cylindrical portion 11a, and the other engagement protrusion 14e is formed in the fourth rib portion 13f of the semi-cylindrical portion 13d. The first position that enters and engages in the engagement hole 13i, and one engagement protrusion 14e enters and engages in the engagement hole 11e formed in the second rib portion 11c, and the other engagement. A second position where the mating protrusion 14e enters and engages in an engagement hole 13h formed in the fourth rib portion 13f, and an engagement hole 11f in which one engagement protrusion 14e is formed in the second rib portion 11c. The other engaging protrusion 14e is engaged with the fourth rib portion 13f. In three positions of the third position engaging enters the made the engagement hole 13g in, is positioned.
 なお、上記したように、一の弧状スリット部14fの両端に形成されている一対のストッパピン14gの間隔は、図7に示すように、第1リブ部11bの幅(第3リブ部13eの幅と同一)よりも幅広に形成されているため、連結ピン14は、第1リブ部11b側の一方のストッパピン14g(例えば、同図中の上側のもの)が第1リブ部11bの一方の端部(例えば、同図中の上端部)に当接し、かつ第3リブ部13e側の他方のストッパピン14g(例えば、同図中の下側のもの)が第3リブ部13eの他方の端部(例えば、同図中の下端部)に当接して回動が規制される位置と、第1リブ部11b側のストッパピン14g(同図中の下側のもの)が第1リブ部11bの他方の端部(同図中の下端部)に当接し、かつ第3リブ部13e側の一方のストッパピン14g(同図中の上側のもの)が第3リブ部13eの一方の端部(同図中の上端部)に当接して回動が規制される位置との間でのみ回動する。 As described above, as shown in FIG. 7, the distance between the pair of stopper pins 14g formed at both ends of one arcuate slit portion 14f is the width of the first rib portion 11b (of the third rib portion 13e). The connecting pin 14 has one stopper pin 14g on the first rib portion 11b side (for example, the upper pin in the figure) that is one end of the first rib portion 11b. The other stopper pin 14g on the third rib portion 13e side (for example, the lower one in the drawing) is in contact with the other end portion of the third rib portion 13e (for example, the upper end portion in the drawing). The position where the rotation is restricted by abutting on the end portion (for example, the lower end portion in the figure) and the stopper pin 14g (the lower side in the figure) on the first rib portion 11b side are the first ribs. Abuts against the other end (lower end in the figure) of the portion 11b, and the third rib portion 13e. One stopper pin 14g (upper side in the figure) is in contact with one end part (upper end part in the figure) of the third rib part 13e so that the rotation is restricted. Rotate.
 この連結ピン14では、上記したように、係合孔11d,11e,11fのいずれかと係合する上記の一方の係合突起14e、および係合孔13g,13h,13iのいずれかと係合する上記の他方の係合突起14eは、弧状スリット部14fが形成されることによって幅狭のアーチ状に形成されて可撓性の高められている第2フランジ部14cの外周側部位に位置している。このため、連結ピン14を回動させて、上記の第1位置~第3位置のいずれかの位置から他の位置に位置決めする際に、上記の外周側部位が適度な弾性力を持って変形して各係合突起14eをピン本体部14aの軸線方向に沿って移動させることができるため、各係合突起14eおよび各係合孔の相互に加わる応力を軽減することができる。このため、各係合突起14eおよび各係合孔の摩耗を大幅に軽減しつつ、連結ピン14の位置決めに適度なクリック感を持たせることが可能となっている。 In the connecting pin 14, as described above, the one engaging protrusion 14e that engages with any one of the engaging holes 11d, 11e, and 11f and the above-described one that engages with any of the engaging holes 13g, 13h, and 13i. The other engaging protrusion 14e is formed in a narrow arch shape by forming the arc-shaped slit portion 14f, and is positioned at the outer peripheral side portion of the second flange portion 14c having enhanced flexibility. . Therefore, when the connecting pin 14 is rotated and positioned from any one of the first position to the third position to another position, the outer peripheral portion is deformed with an appropriate elastic force. Since each engagement protrusion 14e can be moved along the axial direction of the pin main body 14a, the stress applied to each engagement protrusion 14e and each engagement hole can be reduced. For this reason, it is possible to give an appropriate click feeling to the positioning of the connecting pin 14 while greatly reducing wear of each engaging protrusion 14e and each engaging hole.
 音反射材15、第1吸音材16および第2吸音材17は、図5に示すように、エンクロージャ11の内部にエンクロージャ11の奥部側(同図の左側)からスピーカユニット12の方向に向けてこの順に積層されて配設されている。この場合、音反射材15、第1吸音材16および第2吸音材17は、図4に示すように、それぞれの外形形状が、エンクロージャ11の内部におけるそれぞれの配設位置でのエンクロージャ11の内周面の形状に合わせた形状に予め形成されることで、エンクロージャ11の内周面に密着した状態で配設されている。なお、第1吸音材16および第2吸音材17は、上記の順とは逆の順番で積層することもできる。 As shown in FIG. 5, the sound reflecting material 15, the first sound absorbing material 16, and the second sound absorbing material 17 are arranged inside the enclosure 11 from the back side of the enclosure 11 (left side in the figure) toward the speaker unit 12. Laminated and arranged in this order. In this case, as shown in FIG. 4, the sound reflecting material 15, the first sound absorbing material 16, and the second sound absorbing material 17 have the respective outer shapes of the enclosure 11 at the respective arrangement positions inside the enclosure 11. By being formed in advance in a shape that matches the shape of the peripheral surface, it is disposed in close contact with the inner peripheral surface of the enclosure 11. In addition, the 1st sound absorption material 16 and the 2nd sound absorption material 17 can also be laminated | stacked on the reverse order to said order.
 また、第1吸音材16および第2吸音材17は、音反射材15の表面をスピーカユニット12側に露出させる円形孔16a,17a(孔の一例。それぞれの中心軸が軸線L3と同軸となる孔)がそれぞれの中心に形成されている。また、本例では、一例として、円形孔16a,17aの内面形状が、図4,5に示すように、全体として、音反射材15側からスピーカユニット12側に向けて内径が徐々に拡径するホーン状になるように形成されている。 In addition, the first sound absorbing material 16 and the second sound absorbing material 17 are circular holes 16a and 17a (an example of holes, which expose the surface of the sound reflecting material 15 to the speaker unit 12 side. Each central axis is coaxial with the axis L3. Hole) is formed at the center of each. In this example, as an example, the inner surface shape of the circular holes 16a and 17a is gradually increased from the sound reflecting material 15 side toward the speaker unit 12 side as shown in FIGS. It is formed to be like a horn.
 以上のようにして、エンクロージャ11の背面側を半楕円球状(または半球状)に形成し、かつこのエンクロージャ11内に、スピーカユニット12からその背面側に出力される音のうちエンクロージャ11の軸線L3から大きく外れる方向に向かう音を吸収してエンクロージャ11の外部への漏れ出しを低減する第1吸音材16および第2吸音材17をスピーカユニット12側に配設すると共に、スピーカユニット12からその背面側に出力される音のうちエンクロージャ11の軸線L3に沿った方向に向かう音を軸線L3の方向に沿ってスピーカユニット12の側に上記のようにしてホーン状に形成された円形孔16a,17aを介して反射させる音反射材15を配設したことにより、指向性の強いスピーカユニット12の使用と相俟って、スピーカ2は、音の軸線L3方向への指向性が高められている。 As described above, the rear surface side of the enclosure 11 is formed into a semi-elliptical sphere (or hemispherical shape), and the axis L3 of the enclosure 11 is included in the sound output from the speaker unit 12 to the rear surface side in the enclosure 11. A first sound absorbing material 16 and a second sound absorbing material 17 are arranged on the speaker unit 12 side, which absorbs sound moving in a direction greatly deviating from the enclosure and reduces leakage to the outside of the enclosure 11, and from the speaker unit 12 to the back surface thereof. Of the sound output to the side, the sound directed in the direction along the axis L3 of the enclosure 11 is circular holes 16a and 17a formed in the shape of a horn as described above on the side of the speaker unit 12 along the direction of the axis L3. By using the sound reflecting material 15 that is reflected through the speaker, the use of the speaker unit 12 having high directivity is considered. Te, speaker 2, the directivity of the axial line L3 direction of the sound is improved.
 また、第1吸音材16よりも低域側の音をより多く吸収する吸音材(例えば、軟質ウレタンフォーム)を用いて第2吸音材17を構成したことにより、エンクロージャ11からの不要な音の漏れ出しを低音域から高音域に亘って十分に抑制することが可能となっている。 In addition, since the second sound absorbing material 17 is configured using a sound absorbing material (for example, soft urethane foam) that absorbs more of the sound on the lower frequency side than the first sound absorbing material 16, unnecessary sound from the enclosure 11 is reduced. Leakage can be sufficiently suppressed from the low sound range to the high sound range.
 装着部3は、一例として、図1,2に示すように、バンド部31、一対の押付部32および一対の支持アーム33を備え、聴取者の頭部100に装着されると共にスピーカ2を支持して、支持しているスピーカ2を聴取者の耳穴101から頭部100の側方に離間した所定位置にスピーカ2を配置させる。この場合、所定位置とは、スピーカ2内のスピーカユニット12が耳穴101の方向を向いた状態で、スピーカユニット12が頭部100の側頭部から側方に例えば0.3cm以上2cm以下の範囲内で離間し、かつ耳穴101から頭部100の前方に例えば0.3cm以上2cm以下の範囲内で離間した位置(結果として、耳穴101から1cm程度離間した位置)をいうものとする。 As shown in FIGS. 1 and 2, the mounting unit 3 includes a band unit 31, a pair of pressing units 32, and a pair of support arms 33, and is mounted on the listener's head 100 and supports the speaker 2. Then, the speaker 2 is placed at a predetermined position away from the listener's ear hole 101 to the side of the head 100. In this case, the predetermined position is a range in which the speaker unit 12 in the speaker 2 faces the direction of the ear hole 101 and the speaker unit 12 is, for example, 0.3 cm to 2 cm from the side of the head 100 to the side. And a position separated from the ear hole 101 in front of the head 100 within a range of, for example, 0.3 cm or more and 2 cm or less (as a result, a position separated from the ear hole 101 by about 1 cm).
 バンド部31は、一例として、図1,2に示すように、全体としてアーチ状に形成されると共に、各端部側が湾曲させられて耳掛け部31aとして構成されている。具体的には、バンド部31は、弾性を有する柔軟で、かつ軽量な樹脂材料等の素材を用いて形成されている。また、バンド部31は、各耳掛け部31aの間隔が常態において頭部100の幅よりも幅狭となるように形成されている。各押付部32は、図1,2に示すように、バンド部31の各端部(端部、各耳掛け部31aの先端部でもある)にそれぞれ連結されている。 As an example, as shown in FIGS. 1 and 2, the band portion 31 is formed in an arch shape as a whole, and each end portion side is curved and configured as an ear hook portion 31 a. Specifically, the band portion 31 is formed using a material such as a flexible and lightweight resin material having elasticity. Moreover, the band part 31 is formed so that the space | interval of each ear hook part 31a may become narrower than the width | variety of the head 100 in a normal state. As shown in FIGS. 1 and 2, each pressing portion 32 is connected to each end portion of the band portion 31 (an end portion and also a tip end portion of each ear hook portion 31 a).
 この構成により、装着部3は、バンド部31における各耳掛け部31aの間隔(つまり、各押付部32の間隔)をバンド部31の弾性変形力によって頭部100の幅以上にまで変更(拡幅)させることで、頭部100への着脱が自在となっている。また、バンド部31は、頭部100に装着された際には、その弾性力により、一対の押付部32を互いに接近する方向に付勢して、この一対の押付部32で頭部100(具体的には、側頭部における眼窩と耳穴との間の部位(こめかみ))を挟持することにより、装着部3の装着を維持させる。 With this configuration, the mounting portion 3 changes the interval between the ear hook portions 31a in the band portion 31 (that is, the interval between the pressing portions 32) to the width of the head 100 or more by the elastic deformation force of the band portion 31 (widening). ) So that it can be freely attached to and detached from the head 100. Further, when the band portion 31 is attached to the head 100, the pair of pressing portions 32 urges the pair of pressing portions 32 in a direction approaching each other by the elastic force thereof. Specifically, the mounting of the mounting portion 3 is maintained by sandwiching a portion (a temple) between the orbit and the ear hole in the temporal region.
 押付部32の構成について、具体的に説明する。押付部32は、図9に示すように、一例として、円板体41、本体部42、取付ピン43、抜け止めリング44およびバネ部材45を備えている。円板体41は、厚みが一定の偏平な円板状に形成されると共に、中心に第1貫通孔41aが形成され、かつ上面41bに第1噛合部41cが形成されている。本例では、一例として、第1噛合部41cは、第1貫通孔41aを中心として円板体41の径方向に沿って延びる複数の突起が等角度間隔で形成されて構成されている。また、第1貫通孔41aは、その内径が取付ピン43の後述する円柱状のピン本体43aの外径よりも若干大径に形成されている。 The configuration of the pressing unit 32 will be specifically described. As shown in FIG. 9, the pressing portion 32 includes a disc body 41, a main body portion 42, a mounting pin 43, a retaining ring 44, and a spring member 45 as an example. The disc body 41 is formed in a flat disc shape having a constant thickness, a first through hole 41a is formed at the center, and a first engagement portion 41c is formed on the upper surface 41b. In this example, as an example, the first engagement portion 41c is configured by forming a plurality of protrusions extending along the radial direction of the disc body 41 around the first through hole 41a at equal angular intervals. The first through hole 41 a is formed so that its inner diameter is slightly larger than the outer diameter of a cylindrical pin body 43 a of the mounting pin 43 described later.
 本体部42は、図9に示すように、円板状の第1支持壁51、円板状の第2支持壁52、各支持壁51,52の周縁部分を一部を残して連結する周壁53、およびパッド54を有して構成されている。 As shown in FIG. 9, the main body 42 has a disk-shaped first support wall 51, a disk-shaped second support wall 52, and a peripheral wall that connects the peripheral portions of the support walls 51, 52 leaving a part. 53 and a pad 54.
 第1支持壁51は、図9に示すように、円板体41の上面41bに対向して配設されると共に中心に第1貫通孔41aと同径の第2貫通孔51aが形成されている。また、第1支持壁51は、円板体41の上面41bとの対向面51b(同図中の下面)に第1噛合部41cと噛合可能な第2噛合部51cが形成されている。本例では、一例として、第2噛合部51cは、第2貫通孔51aを中心として第1支持壁51の径方向に沿って延びる複数の凹部が等角度間隔(第1噛合部41cを構成する突起と同じ角度間隔)で形成されて構成されている。この場合、第2噛合部51cは、各凹部に第1噛合部41cの各突起が嵌り込むことにより、第1噛合部41cと噛合する。また、本例では、第1支持壁51では、対向面51bの背面51d(同図中の上面)における中央部分に平面視円形の凹部51eが形成されて、この凹部51eの底面中央に第2貫通孔51aが開口する。なお、この凹部51eの内径は、取付ピン43の後述する円板状のピン頭部43bの外径よりも若干大径に形成されて、このピン頭部43bを収容可能に構成されている。 As shown in FIG. 9, the first support wall 51 is disposed so as to face the upper surface 41b of the disc body 41, and a second through hole 51a having the same diameter as the first through hole 41a is formed at the center. Yes. Further, the first support wall 51 has a second meshing portion 51c that can mesh with the first meshing portion 41c on a surface 51b (the lower surface in the figure) facing the upper surface 41b of the disc body 41. In this example, as an example, in the second meshing portion 51c, a plurality of recesses extending along the radial direction of the first support wall 51 with the second through hole 51a as a center constitutes an equiangular interval (the first meshing portion 41c is formed). The same angular interval as the protrusions). In this case, the 2nd meshing part 51c meshes with the 1st meshing part 41c, when each projection of the 1st meshing part 41c fits into each recessed part. Further, in this example, in the first support wall 51, a concave portion 51e having a circular shape in plan view is formed in the central portion of the back surface 51d (upper surface in the drawing) of the facing surface 51b, and the second bottom is formed in the center of the bottom surface of the concave portion 51e. The through hole 51a is opened. The recess 51e has an inner diameter that is slightly larger than the outer diameter of a disk-shaped pin head 43b, which will be described later, of the mounting pin 43, and is configured to accommodate the pin head 43b.
 第2支持壁52は、図9に示すように、円板体41の底面41dに対向して配設されると共に、底面41dとの対向面52aの中心に第1貫通孔41aと同径の円形凹部52bが形成されている。また、本例では、一例として、第2支持壁52の対向面52aには、円形凹部52bを取り囲むようにして、平面視円環状の周溝52cが形成されている。この場合、周溝52cは、その直径がバネ部材45としてのコイルスプリングの直径と同一に規定されて、バネ部材45の下端側が装着可能に構成されている。また、第2支持壁52における対向面52aの背面52d(同図中の下面)には、パッド54が取り付けられている(図2,9,10参照)。第2支持壁52の背面52dは押付部32における頭部100の側頭部との接触面となるため、この背面52dに柔軟で圧迫感の少ない素材で構成されたパッド54を取り付けることにより、心地よくイヤースピーカ装置1を装着することが可能となっている。また、装着部3は、上記したように一対の押付部32で側頭部を挟持して頭部100に装着される構成のため、パッド54の素材として、側頭部と接触した際にすべりにくい素材(例えば、軟質ゴムやスポンジ等)が使用されている。 As shown in FIG. 9, the second support wall 52 is disposed to face the bottom surface 41d of the disc body 41, and has the same diameter as the first through hole 41a at the center of the facing surface 52a with the bottom surface 41d. A circular recess 52b is formed. Further, in this example, as an example, an annular circumferential groove 52c in plan view is formed on the facing surface 52a of the second support wall 52 so as to surround the circular recess 52b. In this case, the diameter of the circumferential groove 52c is defined to be the same as the diameter of the coil spring as the spring member 45, and the lower end side of the spring member 45 is configured to be mountable. A pad 54 is attached to the back surface 52d (the lower surface in the figure) of the facing surface 52a of the second support wall 52 (see FIGS. 2, 9, and 10). Since the back surface 52d of the second support wall 52 serves as a contact surface with the temporal region of the head 100 in the pressing portion 32, by attaching a pad 54 made of a material that is flexible and has little pressure to the back surface 52d, The ear speaker device 1 can be comfortably attached. Further, since the mounting portion 3 is configured to be mounted on the head 100 while holding the temporal region between the pair of pressing portions 32 as described above, as the material of the pad 54, the mounting portion 3 slips when contacting the temporal region. Difficult materials (for example, soft rubber and sponge) are used.
 周壁53は、図9に示すように、第1支持壁51の対向面51bにおける周縁部分の一部に立設された第1周壁53aと、第2支持壁52の対向面52aにおける周縁部分の一部(対向面51bの周縁部分における第1周壁53aの立設部位に対応する部位)に立設された第2周壁53bとで構成されている。周壁53は、上記の第1周壁53aと第2周壁53bとが接合されることによって形成される。この場合、周壁53の長さ、つまり、第1支持壁51の対向面51bと第2支持壁52の対向面52aの間隔X1は、図11に示すように、円板体41における第1噛合部41cの突起の突出長を含む円板体41全体の厚みよりも若干広く形成されている。 As shown in FIG. 9, the peripheral wall 53 includes a first peripheral wall 53 a erected on a part of the peripheral portion of the opposing surface 51 b of the first support wall 51 and a peripheral portion of the opposing surface 52 a of the second support wall 52. It is comprised by the 2nd surrounding wall 53b standingly arranged in a part (part corresponding to the standing part of the 1st surrounding wall 53a in the peripheral part of the opposing surface 51b). The peripheral wall 53 is formed by joining the first peripheral wall 53a and the second peripheral wall 53b. In this case, the length of the peripheral wall 53, that is, the distance X1 between the facing surface 51b of the first support wall 51 and the facing surface 52a of the second support wall 52 is, as shown in FIG. It is formed slightly wider than the entire thickness of the disc body 41 including the protruding length of the protrusion of the portion 41c.
 このようにして、周壁53が第1支持壁51および第2支持壁52の周縁部分をその周縁部分の一部を残して連結する構成を採用したことにより、第1支持壁51および第2支持壁52が周壁53によって一体的に連結された状態において、本体部42には、第1支持壁51、第2支持壁52および周壁53の各内面で囲まれた内部領域(円板体41を収容可能な内部領域)が形成されると共に、この内部領域と本体部42の外部とを連通させる連通孔Bが形成される。 Thus, the surrounding wall 53 employ | adopted the structure which connects the peripheral part of the 1st support wall 51 and the 2nd support wall 52, leaving a part of the peripheral part, Therefore The 1st support wall 51 and the 2nd support In a state where the wall 52 is integrally connected by the peripheral wall 53, the main body 42 has an inner region (the disc body 41 is surrounded by the inner surfaces of the first support wall 51, the second support wall 52, and the peripheral wall 53. A communication hole B is formed to allow communication between the internal region and the outside of the main body portion 42.
 取付ピン43は、図9に示すように、円柱状のピン本体43aと、ピン本体43aの他方の端部(同図中の上端部)に形成されたピン本体43aよりも大径な円板状のピン頭部43bとを備えている。抜け止めリング44は、一例として、Eリングであって、ピン本体43aに装着されて、取付ピン43の抜脱を防止する。バネ部材45は、一例として、コイルスプリングで構成されている。 As shown in FIG. 9, the mounting pin 43 includes a cylindrical pin body 43a and a disk having a larger diameter than the pin body 43a formed at the other end (the upper end in the figure) of the pin body 43a. And a pin-shaped pin head 43b. The retaining ring 44 is an E-ring as an example, and is attached to the pin main body 43a to prevent the mounting pin 43 from being detached. As an example, the spring member 45 is configured by a coil spring.
 以上の構成を備えた押付部32では、図9に示すように、まず、取付ピン43のピン本体43aが、第1支持壁51の第2貫通孔51aに挿入され、さらに円板体41の第1貫通孔41aに挿入される。次いで、第1貫通孔41aから突出するピン本体43aの下端側に抜け止めリング44が装着される。これにより、抜け止めリング44によって取付ピン43の抜脱が防止されると共に、第1支持壁51と円板体41とが取付ピン43を介して一体化される。続いて、ピン本体43aにおける抜け止めリング44の装着部位よりも先端側にバネ部材45が外嵌される。 In the pressing part 32 having the above configuration, as shown in FIG. 9, first, the pin main body 43 a of the mounting pin 43 is inserted into the second through hole 51 a of the first support wall 51, and It is inserted into the first through hole 41a. Next, the retaining ring 44 is attached to the lower end side of the pin body 43a protruding from the first through hole 41a. Accordingly, the retaining ring 44 prevents the mounting pin 43 from being pulled out, and the first support wall 51 and the disc body 41 are integrated via the mounting pin 43. Subsequently, the spring member 45 is fitted on the distal end side of the pin main body 43a with respect to the attachment portion of the retaining ring 44.
 次いで、ピン本体43aの先端が第2支持壁52の円形凹部52b内に挿入され、かつバネ部材45の下端側が周溝52cに装着された状態で、図10に示すように、第1支持壁51に第2支持壁52を接合する。これにより、押付部32の組み立てが完了する。この状態では、バネ部材45は、その第2支持壁52側の端部が、第2支持壁52に形成された周溝52cに装着されることにより、その中心軸がピン本体43aの軸線(後述する第1軸線L1)とほぼ一致した状態となるように維持されている。 Next, as shown in FIG. 10, the first support wall 43a is inserted into the circular recess 52b of the second support wall 52 and the lower end side of the spring member 45 is attached to the circumferential groove 52c. The second support wall 52 is joined to 51. Thereby, the assembly of the pressing part 32 is completed. In this state, the end of the spring member 45 on the second support wall 52 side is attached to the circumferential groove 52c formed in the second support wall 52, so that the central axis thereof is the axis of the pin main body 43a ( The first axis L1), which will be described later, is maintained so as to be substantially coincident.
 この押付部32では、取付ピン43に外力が加わっていないときには、図10に示すように、バネ部材45の付勢力により、バネ部材45の上端と当接する抜け止めリング44が、第2支持壁52を基準として第1支持壁51側に押動され、これに伴い、抜け止めリング44が装着された取付ピン43および抜け止めリング44と接触する円板体41も第1支持壁51側に押動される(取付ピン43が噛合位置に押動される)。このため、円板体41に形成されている第1噛合部41cは、第1支持壁51に形成されている第2噛合部51cと噛合する状態(噛合状態)に移行する。この噛合状態においては、本体部42内でのピン本体43aを中心とした円板体41の回動が規制される。 In this pressing portion 32, when no external force is applied to the mounting pin 43, the retaining ring 44 that comes into contact with the upper end of the spring member 45 by the urging force of the spring member 45 is, as shown in FIG. Accordingly, the mounting pin 43 to which the retaining ring 44 is attached and the disc body 41 that contacts the retaining ring 44 are also moved to the first supporting wall 51 side. It is pushed (the mounting pin 43 is pushed to the meshing position). For this reason, the 1st meshing part 41c formed in the disc body 41 transfers to the state (meshing state) which meshes with the 2nd meshing part 51c formed in the 1st support wall 51. FIG. In this meshing state, the rotation of the disc body 41 around the pin main body 43a in the main body 42 is restricted.
 一方、取付ピン43に第1支持壁51側に押し込む向きの外力が加わり、図11に示すように、バネ部材45の付勢力に抗して、取付ピン43が第2支持壁52側に押動されているとき(解除位置に移動しているとき)には、抜け止めリング44による円板体41の第1支持壁51側への押動が解除されるため、第1噛合部41cと第2噛合部51cとの噛合状態が解除された状態に移行する。この噛合の解除状態では、本体部42内でのピン本体43aを中心とした円板体41の回動が可能となる。 On the other hand, an external force is applied to the mounting pin 43 so as to push it toward the first support wall 51, and the mounting pin 43 pushes against the second support wall 52 side against the biasing force of the spring member 45 as shown in FIG. When being moved (moving to the release position), the pushing of the disc body 41 toward the first support wall 51 by the retaining ring 44 is released, so the first meshing portion 41c and It shifts to a state where the meshing state with the second meshing part 51c is released. In the disengaged state, the disc body 41 can be rotated around the pin main body 43a in the main body 42.
 支持アーム33は、図1,2,3に示すように、一端が押付部32に連結されると共に他端がスピーカ2に連結されて、押付部32の位置を基準としてスピーカ2を所定位置に支持する。本例では、一例として、支持アーム33は、図2,3,9に示すように、一端が押付部32を構成する本体部42に連結されている。また、支持アーム33は、図5に示すように、他端が連結ピン14を構成する第1フランジ部14bに固定されることにより、図5に示すように、連結ピン14を介してスピーカ2の円筒状連結部21に連結されている。一方、バンド部31の各端部(各耳掛け部31aの先端部)は、図3,9,10,11に示すように、連通孔Bに挿通された連結材61を介して、本体部42内の円板体41の外周面に連結されている。この構成により、押付部32は、側頭部との接触面となる第2支持壁52の背面52dに対して直交する第1軸線L1を中心として図3に矢印で示す向きで支持アーム33を回動可能に支持する。 As shown in FIGS. 1, 2, and 3, one end of the support arm 33 is connected to the pressing portion 32 and the other end is connected to the speaker 2, and the speaker 2 is brought into a predetermined position with respect to the position of the pressing portion 32. To support. In this example, as an example, as shown in FIGS. 2, 3, and 9, one end of the support arm 33 is connected to the main body portion 42 that constitutes the pressing portion 32. Further, as shown in FIG. 5, the other end of the support arm 33 is fixed to the first flange portion 14b constituting the connecting pin 14, so that the speaker 2 is connected via the connecting pin 14 as shown in FIG. Are connected to the cylindrical connecting portion 21. On the other hand, each end portion of the band portion 31 (the tip portion of each ear hook portion 31a) is connected to the main body portion via a connecting member 61 inserted into the communication hole B as shown in FIGS. It is connected to the outer peripheral surface of the disc body 41 in 42. With this configuration, the pressing portion 32 moves the support arm 33 in the direction indicated by the arrow in FIG. 3 around the first axis L1 orthogonal to the back surface 52d of the second support wall 52 that is a contact surface with the temporal region. It is supported so that it can rotate.
 次に、イヤースピーカ装置1の頭部100への装着手順について説明する。 Next, a procedure for mounting the ear speaker device 1 on the head 100 will be described.
 まず、バンド部31の各耳掛け部31aや各押付部32を手で持ち、バンド部31を弾性変形させることで、各押付部32の間隔を広げ、この状態で各耳掛け部31a間および各耳掛け部31a間で頭部100を挟むようにして装着部3を装着する。この際に、各耳掛け部31aを耳介102に引っ掛けるようにする。これにより、バンド部31の弾性力によって各押付部32で頭部100の側頭部を挟持し、かつ各耳掛け部31aが耳介102に引っ掛かることで、イヤースピーカ装置1が頭部100に装着される。 First, each ear hooking portion 31a and each pressing portion 32 of the band portion 31 are held by hand, and the band portion 31 is elastically deformed to widen the interval between the pressing portions 32. In this state, between the ear hooking portions 31a and The mounting portion 3 is mounted such that the head 100 is sandwiched between the ear hook portions 31a. At this time, each ear hook 31 a is hooked on the pinna 102. Thereby, the ear speaker device 1 is attached to the head 100 by holding the temporal portion of the head 100 between the pressing portions 32 by the elastic force of the band portion 31 and catching each ear hooking portion 31a on the auricle 102. Installed.
 この装着状態において、頭部100に主として接触する各押付部32の頭部100との接触面(第2支持壁52の背面52d)には、パッド54が取り付けられているため、圧迫感の少ない状態で心地よくイヤースピーカ装置1を装着することができる。 In this mounted state, the pad 54 is attached to the contact surface (the back surface 52d of the second support wall 52) of each pressing portion 32 that mainly contacts the head 100, so that there is little feeling of pressure. The ear speaker device 1 can be worn comfortably in the state.
 次いで、各スピーカ2を聴取者の耳穴101から頭部100の側方に離間した所定位置に配置させる。この際に、各押付部32の取付ピン43におけるピン頭部43bを本体部42に押し込むことにより、上記したように、第1支持壁51に形成された第2噛合部51cと円板体41に形成された第1噛合部41cとの噛合状態が解除されるため、押付部32の第1軸線L1(取付ピン43)を中心として、支持アーム33がバンド部31に対して回動可能な状態となる。これにより、頭部100の側頭部において、第1軸線L1を中心として支持アーム33の回動範囲内で各スピーカ2を回動させて好ましい位置に移動させる。 Next, each speaker 2 is placed at a predetermined position spaced apart from the listener's ear hole 101 to the side of the head 100. At this time, by pushing the pin head portion 43b of the mounting pin 43 of each pressing portion 32 into the main body portion 42, the second meshing portion 51c formed on the first support wall 51 and the disc body 41 as described above. Since the meshing state with the first meshing part 41 c formed on the first part is released, the support arm 33 is rotatable with respect to the band part 31 around the first axis L1 (attachment pin 43) of the pressing part 32. It becomes a state. Thereby, in the temporal region of the head 100, each speaker 2 is rotated within a rotation range of the support arm 33 around the first axis L1 and moved to a preferred position.
 なお、各スピーカ2を好ましい位置に移動させた後には、取付ピン43の本体部42への押し込みを解除する。これにより、取付ピン43および円板体41が本体部42内のバネ部材45の付勢力によって第1支持壁51の方向に移動させられて、第1支持壁51の第2噛合部51cと円板体41の第1噛合部41cとが噛合状態に移行する。したがって、バンド部31に対する支持アーム33の回動が規制されて、支持アーム33が位置決めされる。また、支持アーム33の位置決めが完了した後は、一対の押付部32が側頭部を挟持する構成(本例では、さらにすべりにくい素材で形成されたパッド54が側頭部と当接した状態で一対の押付部32が側頭部を挟持する構成)のため、イヤースピーカ装置1に多少の外力が加わったとしても、支持アーム33、押付部32およびバンド部31の位置が大幅にずれるといった事態の発生が防止されている。 In addition, after moving each speaker 2 to a preferred position, pushing of the mounting pin 43 into the main body 42 is released. As a result, the mounting pin 43 and the disc body 41 are moved in the direction of the first support wall 51 by the biasing force of the spring member 45 in the main body portion 42, and the second meshing portion 51 c of the first support wall 51 and the circular shape are moved. The first meshing portion 41c of the plate body 41 shifts to the meshing state. Accordingly, the rotation of the support arm 33 with respect to the band portion 31 is restricted, and the support arm 33 is positioned. In addition, after the positioning of the support arm 33 is completed, the pair of pressing portions 32 sandwich the temporal portion (in this example, the pad 54 made of a material that is more difficult to slip is in contact with the temporal region). Therefore, even if some external force is applied to the ear speaker device 1, the positions of the support arm 33, the pressing portion 32, and the band portion 31 are greatly shifted. The situation has been prevented.
 続いて、支持アーム33に対してスピーカ2を第2軸線L2を中心として回動させて、上記した第1位置、第2位置および第3位置のうちの好ましい位置に移動させることにより、スピーカ2を所定位置に配置させる。これにより、図1に示すように、イヤースピーカ装置1の頭部100への装着が完了する。このようにして、各スピーカ2が所定位置に位置決めされた状態でイヤースピーカ装置1が頭部100に装着された状態では、各スピーカ2のスピーカユニット12が、対応する耳穴101から頭部100の側方に離間し、かつ耳穴101に指向された状態となることから、鼓膜に与えるダメージが極めて少ない状態で、かつ周囲音が聞き取れる状態で、しかもスピーカユニット12から出力される音を効率よく聴取する(十分な音を聴取する)ことが可能となる。 Subsequently, the speaker 2 is rotated about the second axis L2 with respect to the support arm 33, and moved to a preferred position among the first position, the second position, and the third position described above, thereby causing the speaker 2 to move. Is placed at a predetermined position. Thereby, as shown in FIG. 1, mounting | wearing to the head 100 of the ear speaker apparatus 1 is completed. In this way, in a state where the ear speaker device 1 is mounted on the head 100 with each speaker 2 positioned at a predetermined position, the speaker unit 12 of each speaker 2 moves from the corresponding ear hole 101 to the head 100. Since the sound is separated to the side and directed toward the ear hole 101, the sound output from the speaker unit 12 can be efficiently heard in a state where the damage to the eardrum is extremely small and the ambient sound can be heard. It is possible to listen (enough sound is heard).
 なお、上記の例では、装着部3のバンド部31が頭部100の後頭部側に位置した状態でイヤースピーカ装置1を装着しているが、例えば、バンド部31が頭部100の頂部に掛かり、かつ一対の押付部32が側頭部に接触した状態でイヤースピーカ装置1を装着することも可能であるが、この装着状態においても、上記のようにして各取付ピン43を操作することにより、バンド部31に対して各支持アーム33を回動させて各スピーカ2を任意の位置に移動させることができるため、各スピーカ2を上記の所定位置に配置させることが可能である。 In the above example, the ear speaker device 1 is mounted in a state where the band portion 31 of the mounting portion 3 is positioned on the back of the head 100. For example, the band portion 31 is hung on the top of the head 100. In addition, the ear speaker device 1 can be mounted in a state where the pair of pressing portions 32 are in contact with the temporal region, but even in this mounted state, by operating the mounting pins 43 as described above. Each speaker 2 can be moved to an arbitrary position by rotating each support arm 33 with respect to the band portion 31, so that each speaker 2 can be arranged at the predetermined position.
 このように、このイヤースピーカ装置1では、各押付部32が、押付部32における側頭部との接触面(第2支持壁52の背面52d)に対して直交する第1軸線L1を中心とする支持アーム33の回動を可能に構成されている。 As described above, in the ear speaker device 1, each pressing portion 32 is centered on the first axis L <b> 1 orthogonal to the contact surface (back surface 52 d of the second support wall 52) of the pressing portion 32 with the temporal region. The support arm 33 is configured to be able to rotate.
 したがって、このイヤースピーカ装置1によれば、支持アーム33に取り付けられたスピーカ2を押付部32に対して回動させることができるため、スピーカ2を所定位置に確実に移動させることができることから、鼓膜に与えるダメージが極めて少ない状態で、かつ周囲音が聞き取れる状態で、しかもスピーカユニット12から出力される音を効率よく聴取する(十分な音を聴取する)ことができる。 Therefore, according to this ear speaker device 1, since the speaker 2 attached to the support arm 33 can be rotated with respect to the pressing portion 32, the speaker 2 can be reliably moved to a predetermined position. In a state where damage to the eardrum is extremely small and ambient sounds can be heard, the sound output from the speaker unit 12 can be efficiently heard (a sufficient sound can be heard).
 また、このイヤースピーカ装置1では、各スピーカ2が、背面側が半楕円球状(または半球状)に形成されたエンクロージャ11を備え、このエンクロージャ11の内部に音反射材15および各吸音材16,17がエンクロージャ11の奥部側からスピーカユニット12方向に向けてこの順に積層されると共に、各吸音材16,17の中心に音反射材15の表面をスピーカユニット12側に露出させる各円形孔16a,17aが形成されている。 Further, in the ear speaker device 1, each speaker 2 includes an enclosure 11 whose back side is formed in a semi-elliptical sphere (or a hemisphere), and the sound reflecting material 15 and the sound absorbing materials 16 and 17 are provided inside the enclosure 11. Are stacked in this order from the back side of the enclosure 11 toward the speaker unit 12, and the circular holes 16 a that expose the surface of the sound reflecting material 15 to the speaker unit 12 side at the centers of the sound absorbing materials 16 and 17. 17a is formed.
 したがって、このイヤースピーカ装置1のスピーカ2によれば、スピーカユニット12からその背面側に出力される音のうち、エンクロージャ11の軸線L3に沿った方向に向かう音については、各円形孔16a,17aを介して音反射材15に到達させると共に音反射材15によってスピーカユニット12側に反射させ、軸線L3に沿った方向以外の方向に向かう音については各吸音材16,17で吸収することができる。また、音反射材15によってスピーカユニット12側に反射される音のうち、エンクロージャ11の軸線L3に沿った方向に向かう音についてはエンクロージャ11の正面側から出力させ、軸線L3に沿った方向以外の方向に向かう音については各吸音材16,17で吸収することができる。これにより、このイヤースピーカ装置1によれば、スピーカ2の軸線L3の方向への指向性を十分に高めつつ、エンクロージャ11からの音漏れの少ない状態で、効率よく耳穴101に音を出力することができるため、スピーカユニット12から出力される音を一層効率よく聴取することができる。 Therefore, according to the speaker 2 of the ear speaker device 1, of the sounds output from the speaker unit 12 to the back side thereof, the sounds directed in the direction along the axis L3 of the enclosure 11 are each circular hole 16a, 17a. The sound-reflecting material 15 is made to reach, and the sound-reflecting material 15 reflects the sound to the speaker unit 12 side, so that the sound traveling in a direction other than the direction along the axis L3 can be absorbed by the sound-absorbing materials 16 and 17. . Of the sound reflected by the sound reflecting material 15 to the speaker unit 12 side, the sound that goes in the direction along the axis L3 of the enclosure 11 is output from the front side of the enclosure 11 and is not in the direction along the axis L3. Sound traveling in the direction can be absorbed by the sound absorbing materials 16 and 17. As a result, according to the ear speaker device 1, sound is efficiently output to the ear hole 101 in a state where sound directing from the enclosure 11 is small while sufficiently increasing the directivity in the direction of the axis L <b> 3 of the speaker 2. Therefore, the sound output from the speaker unit 12 can be heard more efficiently.
 また、このイヤースピーカ装置1によれば、スピーカ2のエンクロージャ11における背面側が半カップ状(半楕円球状または半球状)に形成されているため、エンクロージャ11から出力される音に対する共振が生じにくく、これによってスピーカ2の周波数特性がよりフラットに近い状態になるため、優れた音質で音を出力することができる。 Moreover, according to this ear speaker device 1, since the back side of the enclosure 11 of the speaker 2 is formed in a semi-cup shape (semi-elliptical sphere or semi-spherical shape), resonance with sound output from the enclosure 11 hardly occurs, As a result, the frequency characteristic of the speaker 2 becomes closer to a flat state, so that sound can be output with excellent sound quality.
 また、このイヤースピーカ装置1では、第1吸音材16と、第1吸音材16よりも低域側の音を吸収する第2吸音材17とがエンクロージャ11の奥部側からスピーカユニット12方向に向けて積層されて構成されている。したがって、このイヤースピーカ装置1によれば、エンクロージャ11からの不要な音の漏れ出しを低音域から高音域に亘って十分に抑制することができる。 Further, in the ear speaker device 1, the first sound absorbing material 16 and the second sound absorbing material 17 that absorbs sound on the lower frequency side than the first sound absorbing material 16 are provided in the direction from the back of the enclosure 11 toward the speaker unit 12. It is laminated and oriented. Therefore, according to the ear speaker device 1, unnecessary sound leakage from the enclosure 11 can be sufficiently suppressed from the low sound range to the high sound range.
 また、このイヤースピーカ装置1によれば、各押付部32が、上記のように構成された円板体41、本体部42、取付ピン43、抜け止めリング44およびバネ部材45を備えて構成されているため、簡単な構造でありながら、バンド部31に対するスピーカ2の回動を可能としつつ、スピーカ2を任意の位置で位置決めすることができる。 Further, according to the ear speaker device 1, each pressing portion 32 includes the disc body 41, the main body portion 42, the mounting pin 43, the retaining ring 44 and the spring member 45 configured as described above. Therefore, the speaker 2 can be positioned at an arbitrary position while allowing the speaker 2 to rotate with respect to the band portion 31 while having a simple structure.
 また、このイヤースピーカ装置1によれば、各スピーカ2が、対応する支持アーム33の長さ方向に沿った(長さ方向とほぼ平行な)第2軸線L2を中心として回動自在に支持アーム33の他端に連結されているため、スピーカユニット12の向きを微調整することができることから、スピーカユニット12が耳穴101の方向に向く所定位置にスピーカ2を確実に配置することができる。これにより、スピーカユニット12から出力される音をより一層効率よく聴取することができる。 Further, according to the ear speaker device 1, each speaker 2 is supported by the support arm 33 so as to be rotatable about the second axis L2 along the length direction of the corresponding support arm 33 (substantially parallel to the length direction). Since the direction of the speaker unit 12 can be finely adjusted because it is connected to the other end of 33, the speaker 2 can be reliably arranged at a predetermined position where the speaker unit 12 faces the direction of the ear hole 101. Thereby, the sound output from the speaker unit 12 can be heard more efficiently.
 なお、上記の構成に限定されない。例えば、上記の例では、押付部32の本体部42に支持アーム33を連結し、円板体41にバンド部31の耳掛け部31aを連結する構成を採用しているが、図示はしないが、押付部32の本体部42に耳掛け部31aを連結し、円板体41に支持アーム33を連結する構成を採用することもできる。 Note that the present invention is not limited to the above configuration. For example, in the above example, a configuration in which the support arm 33 is connected to the main body portion 42 of the pressing portion 32 and the ear hooking portion 31a of the band portion 31 is connected to the disc body 41 is not illustrated. Alternatively, a configuration in which the ear hooking portion 31 a is connected to the main body portion 42 of the pressing portion 32 and the support arm 33 is connected to the disc body 41 may be employed.
 本願発明に係るイヤースピーカ装置は、装着部を構成するバンド部を利用して聴取者の頭部に装着して使用される。この状態において、バンド部の各先端部に連結されている一対の押付部が頭部の側頭部に押し付けられて、この押付部に連結された支持アームに支持されているスピーカが聴取者の耳穴から頭部の側方に離間して配置される。これにより、このイヤースピーカ装置を使用することで、鼓膜に与えるダメージが極めて少なく、かつ周囲音が聞き取れる状態で、スピーカから出力される音を聴取することが可能である。 The ear speaker device according to the present invention is used by being worn on the listener's head using a band part constituting the wearing part. In this state, the pair of pressing parts connected to the respective front ends of the band part are pressed against the side of the head, and the speaker supported by the support arm connected to the pressing part is the listener's It is spaced apart from the ear hole to the side of the head. Thereby, by using this ear speaker device, it is possible to listen to the sound output from the speaker in a state where the damage to the eardrum is extremely small and the ambient sound can be heard.
     1 イヤースピーカ装置
     2 スピーカ
     3 装着部
    11 エンクロージャ
    12 スピーカユニット
    15 音反射材
    16 第1吸音材
   16a 円形孔
    17 第2吸音材
   17a 円形孔
    31 バンド部
    32 押付部
    33 支持アーム
    41 円板体
   41a 第1貫通孔
   41c 第1噛合部
    42 本体部
    43 取付ピン
    44 抜け止めリング
    45 バネ部材
    51 第1支持壁
   51a 第2貫通孔
   51c 第2噛合部
    52 第2支持壁
   52b 円形凹部
   100 頭部
   101 耳穴
    L1 第1軸線
DESCRIPTION OF SYMBOLS 1 Ear speaker apparatus 2 Speaker 3 Mounting part 11 Enclosure 12 Speaker unit 15 Sound reflection material 16 1st sound absorption material 16a Circular hole 17 2nd sound absorption material 17a Circular hole 31 Band part 32 Pressing part 33 Support arm 41 Disc body 41a 1st Through hole 41c First engagement portion 42 Body portion 43 Mounting pin 44 Retaining ring 45 Spring member 51 First support wall 51a Second through hole 51c Second engagement portion 52 Second support wall 52b Circular recess 100 Head portion 101 Ear hole L1 First 1 axis

Claims (5)

  1.  スピーカ、および聴取者の頭部に装着されると共に前記スピーカを前記聴取者の耳穴から当該頭部の側方に離間した所定位置に配置させる装着部を備え、
     前記装着部は、弾性を有するアーチ状のバンド部と、当該バンド部の各先端部に連結されて当該バンド部が前記頭部に装着された際に当該バンド部の弾性力によって前記頭部の側頭部に押し付けられる一対の押付部と、一端が前記押付部に連結されると共に他端に前記スピーカが連結されて当該スピーカを前記所定位置に支持する支持アームとを有し、前記押付部は、当該押付部における前記側頭部との接触面に対して直交する第1軸線を中心とする前記支持アームの回動を可能に構成されているイヤースピーカ装置。
    A speaker, and a mounting portion that is mounted on a listener's head and that places the speaker at a predetermined position spaced apart from the listener's ear hole to the side of the head;
    The mounting portion includes an elastic arch-shaped band portion and an elastic force of the band portion when the band portion is attached to the head portion. A pair of pressing portions that are pressed against the temporal region; and a supporting arm that has one end connected to the pressing portion and the other end connected to the speaker to support the speaker in the predetermined position. Is an ear speaker device configured to be capable of rotating the support arm around a first axis perpendicular to a contact surface with the temporal portion of the pressing portion.
  2.  前記スピーカは、スピーカユニット、および前面に前記スピーカユニットが取り付けられると共に背面側が半カップ状に形成されて前記支持アームの前記他端に連結されたエンクロージャを備え、当該エンクロージャの内部に音反射材および音吸収材が当該エンクロージャの奥部側から前記スピーカユニットに向けてこの順に積層されると共に、前記音吸収材の中心に前記音反射材の表面を当該スピーカユニット側に露出させる孔が形成されている請求項1記載のイヤースピーカ装置。 The speaker includes a speaker unit and an enclosure in which the speaker unit is attached to the front surface and the back side is formed in a semi-cup shape and is connected to the other end of the support arm. A sound absorbing material is laminated in this order from the back side of the enclosure toward the speaker unit, and a hole is formed in the center of the sound absorbing material to expose the surface of the sound reflecting material to the speaker unit side. The ear speaker device according to claim 1.
  3.  前記音吸収材は、第1音吸収材と、当該第1音吸収材よりも低域側の音を吸収する第2音吸収材とが前記エンクロージャの奥部側から前記スピーカユニットに向けて積層されて構成されている請求項2記載のイヤースピーカ装置。 The sound absorbing material is formed by laminating a first sound absorbing material and a second sound absorbing material that absorbs sound on a lower frequency side than the first sound absorbing material from the back side of the enclosure toward the speaker unit. The ear speaker device according to claim 2, wherein the ear speaker device is configured.
  4.  前記押付部は、
     中心に第1貫通孔が形成されると共に上面に第1噛合部が形成された偏平な円板体と、
     前記円板体の前記上面に対向して配設されると共に中心に第2貫通孔が形成され、かつ当該円板体の当該上面との対向面に前記第1噛合部と噛合可能な第2噛合部が形成された円板状の第1支持壁、当該円板体の底面に対向して配設されると共に当該円板体の当該底面との対向面の中心に円形凹部が形成された円板状の第2支持壁および前記各支持壁の周縁部分を一部を残して連結する周壁を有する本体部と、
     前記第1貫通孔および前記第2貫通孔を貫通すると共に一方の端部が前記円形凹部内に挿入され、かつ他方の端部が前記第1支持壁から突出した状態で配設されたピン本体、および当該ピン本体の前記他方の端部に形成されたピン頭部を有する取付ピンと、
     前記ピン本体の外周面における前記円板体と前記第2支持壁との間に位置する部位に装着されて、前記取付ピンの抜脱を防止する抜け止めリングと、
     前記第2支持壁と前記抜け止めリングとの間に配設されて、当該第2支持壁に対して当該抜け止めリングを当該抜け止めリングが装着された前記取付ピンおよび当該抜け止めリングと当接する前記円板体と共に前記第1支持壁側に向けて常時付勢するバネ部材とを備え、
     前記バンド部の前記先端部は、前記押付部における前記本体部および前記円板体のいずれか一方に連結され、
     前記支持アームの前記一端は、前記押付部における前記本体部および前記円板体のいずれか他方に連結されている請求項1から3のいずれかに記載のイヤースピーカ装置。
    The pressing portion is
    A flat disk body in which a first through hole is formed at the center and a first meshing portion is formed on the upper surface;
    A second through hole is formed opposite to the upper surface of the disc body and has a second through-hole formed at the center thereof, and can be engaged with the first engagement portion on a surface facing the upper surface of the disc body. A disk-shaped first support wall formed with a meshing portion is disposed to face the bottom surface of the disk body, and a circular recess is formed at the center of the surface of the disk body facing the bottom surface. A main body having a disk-shaped second support wall and a peripheral wall connecting the peripheral portions of the respective support walls leaving a part thereof;
    A pin body that passes through the first through hole and the second through hole, and has one end inserted into the circular recess and the other end protruding from the first support wall. A mounting pin having a pin head formed at the other end of the pin body;
    A retaining ring that is attached to a portion located between the disk body and the second support wall on the outer peripheral surface of the pin body, and prevents the mounting pin from being pulled out;
    The retaining pin is disposed between the second support wall and the retaining ring, and the retaining ring is attached to the second supporting wall and the retaining ring. A spring member that constantly urges toward the first support wall together with the disk body in contact with the disk body;
    The tip of the band part is connected to either the main body part or the disc body in the pressing part,
    The ear speaker device according to any one of claims 1 to 3, wherein the one end of the support arm is connected to one of the main body and the disc body in the pressing portion.
  5.  前記スピーカは、前記支持アームの長さ方向に沿った第2軸線を中心として回動自在に当該支持アームの前記他端に連結されている請求項1から4のいずれかに記載のイヤースピーカ装置。 The ear speaker device according to claim 1, wherein the speaker is coupled to the other end of the support arm so as to be rotatable about a second axis along the length direction of the support arm. .
PCT/JP2013/052813 2012-02-22 2013-02-07 Ear speaker device WO2013125355A1 (en)

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