WO2014091598A1 - Dispositif de haut-parleur - Google Patents

Dispositif de haut-parleur Download PDF

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Publication number
WO2014091598A1
WO2014091598A1 PCT/JP2012/082346 JP2012082346W WO2014091598A1 WO 2014091598 A1 WO2014091598 A1 WO 2014091598A1 JP 2012082346 W JP2012082346 W JP 2012082346W WO 2014091598 A1 WO2014091598 A1 WO 2014091598A1
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WO
WIPO (PCT)
Prior art keywords
diaphragm
sound
diaphragms
speaker device
baffle surface
Prior art date
Application number
PCT/JP2012/082346
Other languages
English (en)
Japanese (ja)
Inventor
健一 大嶋
高山　浩治
Original Assignee
パイオニア株式会社
東北パイオニア株式会社
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 パイオニア株式会社, 東北パイオニア株式会社 filed Critical パイオニア株式会社
Priority to PCT/JP2012/082346 priority Critical patent/WO2014091598A1/fr
Publication of WO2014091598A1 publication Critical patent/WO2014091598A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/403—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers loud-speakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2807—Enclosures comprising vibrating or resonating arrangements
    • H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
    • H04R1/2819—Enclosures comprising vibrating or resonating arrangements of the bass reflex type for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
    • H04R1/2869—Reduction of undesired resonances, i.e. standing waves within enclosure, or of undesired vibrations, i.e. of the enclosure itself
    • H04R1/2892—Mountings or supports for transducers
    • H04R1/2896—Mountings or supports for transducers for loudspeaker transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the present invention relates to a speaker device.
  • speaker devices are often attached to automobile doors, personal computers, televisions or cabinets.
  • a speaker device when a speaker device is attached to an automobile, a personal computer, a television, or the like, there is a restriction on the attachment area. That is, in a general speaker device, a front surface in a direction in which a sound wave oscillated by a diaphragm (cone paper or the like) radiates occupies an area at least as large as the diaphragm.
  • a diaphragm cone paper or the like
  • the problem to be solved by the present invention includes, for example, a problem that the area of the diaphragm generated in the above-described conventional speaker device cannot be sufficiently increased.
  • the speaker device includes a stationary portion including a baffle surface, a first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and the baffle surface side and the opposite side.
  • a second diaphragm that emits sound in a direction different from the first diaphragm in a direction different from the first diaphragm, and is supported by the stationary portion directly or via another member, and the first and second A driving portion for driving the diaphragm, wherein one recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first vibration The plate and the second diaphragm vibrate so as to be close to and away from each other.
  • a speaker device includes a stationary part (a cabinet, an automobile door, other attached parts, etc.) including a baffle surface.
  • a first diaphragm that emits sound in a direction different from the baffle surface side and the opposite side, and a sound that emits sound in a direction different from the baffle surface side and the opposite side in a direction different from the first diaphragm.
  • a second diaphragm is provided.
  • a driving unit that is supported by the stationary unit directly or via another member and that drives the first and second diaphragms is provided.
  • One recess is opened in the baffle surface, the first diaphragm and the second diaphragm are located in the recess, and the first diaphragm and the second diaphragm vibrate so as to be close to and away from each other. .
  • the speaker device of the first embodiment of the present invention has the structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24, and a box portion 25.
  • the baffle plate 21 of the speaker device is, for example, the inner surface of an automobile door, and the surface on the side where the driver or passenger is present is a baffle surface 21a.
  • the side portion 22 extends from the edge of the opening formed in the baffle plate 21 to the side opposite to the baffle surface 21a, and has a back surface portion 23 at the end thereof.
  • An opening 23 a is formed in the back surface portion 23, and the inside of the box portion 25 is communicated with the opening 23 a through a cylindrical port portion 24.
  • the inside of the side portion 22 is a single recess 2A that opens to the baffle surface 21a.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A.
  • the “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • first and second dynamic speakers 10-1 and 10-2 are arranged.
  • the dynamic speakers 10-1 and 10-2 include the first and second diaphragms 1-1 and 1-2, respectively. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a.
  • the dynamic speakers 10-1 and 10-2 include a first driving unit 3-1 and a second driving unit 3 that drive the first diaphragm 1-1 and the second diaphragm 1-2, respectively. -2.
  • the first and second dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions. In other words, the vibration plates 1-1 and 1-2 are arranged so that the axes in the vibration direction are coaxial.
  • the sound radiation direction is exactly parallel to the baffle surface 21a, but in the case of the seventh and eighth embodiments described later, the sound radiation direction is slightly inclined with respect to the baffle surface 21a.
  • the concept of “substantially parallel” includes both the case of being exactly parallel and the case of being slightly inclined.
  • the sound emission directions A1 and A2 are exactly opposite to each other, but in the case of the seventh and eighth embodiments described later, the sound emission directions are slightly inclined and reversed.
  • the concept of “substantially reverse” includes both the case where the direction is exactly opposite and the case where the direction is slightly inclined.
  • the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a.
  • the drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed.
  • the voice coil 31 has a cross-sectional shape that is an annular shape. Note that the cross section of the voice coil 31 here is a surface extending in a direction intersecting the vibration direction of the voice coil 31 itself.
  • the voice coil 31 is composed of, for example, a linear conductive member wound around an axis in the vibration direction.
  • the conductive member is supported by an annular voice coil support portion 33.
  • the voice coil support portion 33 may be made of a known resin material. Diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support 33.
  • the magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C.
  • a magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A.
  • the voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G.
  • the same acoustic signal is input to the voice coils 31 and 31 via the lead wire (not shown)
  • the sound current flowing through the voice coil 31 crosses the magnetic flux of the magnetic gap 32G, thereby generating a Lorentz force.
  • the voice coil support part 33 vibrates. This is a driving force for vibrating the diaphragms 1-1 and 1-2.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2.
  • the voice coil support portions 33 and 33 are vibrated by linear movement in the opposite directions, and the diaphragms 1-1 and 1-2 are vibrated as indicated by arrows C. That is, the diaphragms 1-1 and 1-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Accordingly, the first and second diaphragms 1-1 and 1-2 are baffle plate 21 as compared with the conventional one in which a dynamic speaker is arranged so that one diaphragm is parallel to baffle surface 21a. The area occupied by is smaller. Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • the speaker device of the second embodiment of the present invention has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the second embodiment differs from the first embodiment in the shapes of the baffle plate 21, the side portion 22, the back portion 23, and the recess 2A.
  • the baffle plate 21 is formed with a sound emitting hole 21b at the opening of the recess 2A.
  • the two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is also reduced accordingly.
  • the configurations and operations of the first and second dynamic speakers 10-1 and 10-2, the first drive unit 3-1 and the second drive unit 3-2 are the same as those in the first embodiment. .
  • the same elements as those in the first embodiment are denoted by the same reference numerals as those in FIG.
  • the sound according to the acoustic signal is radiated in the sound radiation directions A1 and A2 due to the vibration of the diaphragms 1-1 and 1-2, and this sound is further detoured in the recess 2A and further B1, Guided in the direction of B2. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a. Since the side portions 22 and 22 are inclined, the periphery of the recess 2A is also inclined. The horn effect is obtained for the sound guided in the direction of B1 and B2 by the shape of the recess 2A.
  • the generated sound is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the baffle plate 21 is the same as that of the first embodiment, and the side portion 22, the back portion 23, and the port portion 24 are the same as those of the second embodiment.
  • the third embodiment differs from the first and second embodiments in the shape of the box portion 25, one dynamic speaker 10, the first drive unit 3-1, and the second drive unit 3- 2 configuration.
  • the drive units 3-1 and 3-2 are supported by the box unit 25 (stationary unit) via the case 3a.
  • the drive units 3-1 and 3-2 include a voice coil 31 and a magnetic circuit 32 having a magnetic gap 32G in which the voice coil 31 is disposed.
  • the voice coil 31 is supported by the voice coil support portion 33.
  • the voice coil 31 and the voice coil support portion 33 are the same as in the first embodiment, and the diaphragms 1-1 and 1-2 are coupled to the end of the voice coil support portion 33.
  • the magnetic circuit 32 includes a yoke 32A, a magnet 32B, and a plate 32C, and a magnetic gap 32G is formed between the outer peripheral surface of the plate 32C and the yoke 32A.
  • the voice coil 31 and the voice coil support portion 33 are disposed in the magnetic gap 32G.
  • the feature of the third embodiment is that the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D.
  • the length in the opposing direction of the first diaphragm 1-1 and the second diaphragm 1-2 is made smaller than in the first and second embodiments.
  • the voice coil 31 and the voice coil support unit 33 vibrate. This becomes a driving force for vibrating the diaphragms 1-1 and 1-2.
  • the same acoustic signal is supplied to the magnetic circuit 32 of the first and second driving units 3-1 and 3-2 as in the above embodiment, and the diaphragm 1-1 and the diaphragm 1-1 are indicated by arrows C as shown in FIG. 1-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d1 between the first and second diaphragms 1-1 and 1-2 is the maximum length of the first and second diaphragms 1-1 and 1-2. It is smaller than a certain diameter D. Further, since the yoke 32A of the first drive unit 3-1 and the yoke 32A of the second drive unit 3-1 are integrated into a single yoke 32D, the first and second diaphragms 1-1 are formed. , 1-2 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 has a baffle plate 21, side portions 22, a back surface portion 23, a port portion 24 and a box portion 25.
  • a duct portion 24 a having a port portion 24 extending rearward and a bass reflex port 26 that opens to the baffle plate 21 are provided.
  • the first diaphragm 1-1 and the second diaphragm 1-2 are located in the recess 2A.
  • Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the “sound radiation direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the fourth embodiment is different from the third embodiment in that the cabinet 2 has a duct portion 24a and a bass reflex port 26.
  • the configuration and operation of the drive unit 3-2 are the same as those in the third embodiment, and a duplicate description is omitted.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the above embodiment.
  • the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the generated sound is guided through the port portion 24 and the duct 24a in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the low-frequency component is sufficiently diffracted and guided further from the bass reflex port 26 toward the baffle surface 21a. Thereby, a bass reflex effect is obtained.
  • the distance d1 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Furthermore, since the two yokes are integrated as in the third embodiment, the distance d1 is smaller than the distance d between the first and second embodiments. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • a speaker apparatus has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21, side portions 22, a back surface portion 23, and a box portion 27.
  • the first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A.
  • the “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the fifth embodiment differs from the fourth embodiment in that no sound emission holes are formed in the baffle plate 21, the box portion 27 has a thin shape, and the thin speaker 20 instead of the dynamic speaker. It is a point using.
  • the box portion 27 is sealed on the baffle plate 21 side, and openings 27 a and 27 a are formed on the side facing the side portion 22.
  • the first and second diaphragms 4-1 and 4-2 of the thin speaker 20 face the openings 27a and 27a, respectively.
  • the portion of the box portion 27 on the back plate 23 side is a port portion 27b.
  • the thin speaker 20 includes first and second diaphragms 4-1, 4-2, and first and second drive units 5-1, 5-2. .
  • the outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by the frames 20a and 20a via the edges 4a1 and 4a2.
  • the frame 20a is formed with a radiation hole 20b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2.
  • the driving portions 5-1 and 5-2 are held by a mounting portion 20c extending from the side wall of the frame 20a.
  • the drive units 5-1 and 5-2 include a voice coil 51 wound around a voice coil support unit 53 and a magnetic circuit 52 having a magnetic gap 52G.
  • the voice coil support portion 53 has a plate shape.
  • the magnetic circuit 52 includes a plurality of magnets 521 to 524 and a yoke 525. Magnets 521 and 523 and magnets 522 and 524 are provided on both sides of the magnetic gap 52G along the direction of the magnetic field.
  • the magnetic gap 52G is formed in a groove shape so that the voice coil 51 can move within a specified range along a predetermined direction.
  • the voice coil support portion 53 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 6.
  • the link mechanism 6 has link members 6A to 6D, and the link members 6A to 6D have joint portions 6a to 6d.
  • the link members 6A and 6B are connected to the diaphragms 4-1 and 4-2 through joint portions 6a and 6b, respectively.
  • the link members 6C and 6D are connected to the diaphragms 4-1 and 4-2 through joint portions 6c and 6d, respectively.
  • the link members 6A and 6B are connected to the voice coil support portion 53 on the first drive portion 5-1 side via the joint portion 6e.
  • the link members 6C and 6D are connected to the voice coil support portion 53 on the second drive portion 5-2 side through the joint portion 6f.
  • the joint portions 6a to 6f are portions that support or connect the link members 6A to 6D with respect to other portions so that the angle can be changed.
  • each voice coil support part 53 and 53 carries out a linear motion to a reverse direction, and vibrates.
  • the link members 6A to 6D of the link mechanism 6 transmit the vibration of the voice coil support portions 53, 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. . That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the sound corresponding to the acoustic signal is radiated in the direction of the sound radiation direction A1, A2 (FIG. 5 (A)) by the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
  • the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • the vibration directions of the first and second diaphragms 4-1 and 4-2 and the vibration directions of the voice coils 51 and 51 are always reversed, the vibrations are canceled each other and unnecessary sound is generated. Can be reduced.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other. In this example, it is exactly vertical, but may be slightly inclined.
  • the concept of “substantially vertical” includes both the case of being exactly vertical and the case of being slightly inclined.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 is the same as that in the fifth embodiment.
  • the same elements as those in the fifth embodiment are denoted by the same reference numerals as those in FIG.
  • Openings 27a and 27a are formed on the side of the box portion 25 that faces the side portion 22, and the first and second diaphragms 4-1 and 4-2 face the openings 27a and 27a, respectively. ing.
  • the “sound radiating direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • This sixth embodiment is different from the fifth embodiment in that the drive unit 5 uses only one thin speaker 30.
  • the thin speaker 30 includes first and second diaphragms 4-1, 4-2 and one drive unit 5.
  • the drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment.
  • the voice coil support portion 53 of the drive unit 5 and the diaphragms 4-1 and 4-2 are connected via the link mechanism 7.
  • the link mechanism 7 has link members 7A to 7D, and the link members 7A to 7D have joint portions 7a to 7d.
  • the link members 7A and 7B are connected to the diaphragms 4-1 and 4-2 through joint portions 7a and 7b, respectively.
  • the link members 7C and 7D are connected to the diaphragms 4-1 and 4-2 through joint portions 7c and 7d, respectively.
  • the link members 7A and 7B are connected to the voice coil support portion 53 via the joint portion 7e.
  • the link members 7C and 7D are connected to the voice coil support portion 53 via the joint portion 7f.
  • the joint portions 7a to 7f are portions that support or connect the link members 7A to 7D with respect to other portions so that the angle can be changed.
  • an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5.
  • the voice coil 51 and the voice coil support part 53 vibrate by linear movement.
  • the link members 7A to 7D of the link mechanism 7 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by the arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 (FIG. 6 (A)) due to the vibration of the diaphragms 4-1 and 4-2, and this sound further bypasses the recess 2A. Guided in the direction of B1 and B2. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 5 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 5 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 20b and the port portion 27b.
  • the distance d2 between the first and second diaphragms 4-1, 4-2 is greater than the length D2 of the first and second diaphragms 4-1, 4-2. Is also getting smaller. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 20 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • a speaker device has a structure shown in FIG.
  • This speaker device includes a first diaphragm 1-1, a second diaphragm 1-2, and a cabinet 2 as a “stationary part”.
  • the baffle plate 21, the side portion 22, the back portion 23, and the port portion 24 are the same as those in the third embodiment (FIG. 3A). It is.
  • the box portion 25 is the same as that in the first embodiment (FIG. 1A).
  • first and second dynamic speakers 10-1 and 10-2 are arranged.
  • the two dynamic speakers 10-1 and 10-2 are arranged in parallel in opposite directions, but the two dynamic speakers 10-1 and 10-2 in the seventh embodiment are mutually connected. It is arranged in a reverse direction and slightly inclined in the reverse direction. In other words, the vibration direction axes of the diaphragms 1-1 and 1-2 are slightly angled. Openings 25a and 25a are formed on the side opposite to the side 22 of the box portion 25, and the first and second diaphragms 1-1 and 1-2 are respectively exposed to the openings 25a and 25a. ing.
  • the individual constituent actions of the first and second dynamic speakers 10-1 and 10-2 are the same as those in the first embodiment, and a duplicate description is omitted.
  • the “sound radiating direction” in which the first diaphragm 1-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiating direction” in which the second diaphragm 1-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • the same acoustic signal is supplied to the magnetic circuits 32 of the first and second drive units 3-1 and 3-2 as in the first embodiment.
  • the diaphragms 1-1 and 1-2 vibrate so as to approach and separate from each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibrations of the diaphragms 1-1 and 1-2, and the sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned.
  • the sound emitted from one direction of the first diaphragm 1-1 and the sound emitted from one direction of the second diaphragm 1-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 3-1 side (the other direction) of the first diaphragm 1-1 and the sound emitted from the drive unit 3-2 side (the other direction) of the second diaphragm 1-2 is guided through the port portion 24 in the direction of the arrow B3 opposite to the direction of the baffle surface 21a.
  • the distance d3 between the first and second diaphragms 1-1 and 1-2 is equal to the first and second diaphragms 1-1 and 1. It is smaller than the diameter D which is the maximum length of -2. Therefore, the area occupied by the first and second diaphragms 1-1 and 1-2 with respect to the baffle plate 21 is further reduced, which is suitable for installation in a place where the occupied space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 1-1 and 1-2, and a sufficient sound pressure can be obtained.
  • the vibration direction of the first and second diaphragms 1-1 and 1-2 and the vibration direction of the voice coils 31 and 31 are slightly inclined, but most of the movement amount of the member due to the vibration is as follows. Since the directions are always reversed, it is possible to substantially cancel vibrations from each other and reduce the generation of unnecessary sounds.
  • a speaker apparatus has a structure shown in FIG.
  • This speaker device includes a first diaphragm 4-1, a second diaphragm 4-2, and a cabinet 2 as a “stationary part”.
  • the cabinet 2 includes a baffle plate 21 having a baffle surface 21 a, a side portion 22, a back surface portion 23, a port portion 24 and a box portion 28.
  • the two side portions 22 and 22 are inclined so as to approach the back surface portion 23 side, and the back surface portion 23 is located at the rear end portion.
  • the insides of the side portions 22 and 22 form one concave portion 2A opened in the baffle surface 21a.
  • the first diaphragm 4-1 and the second diaphragm 4-2 are located in the recess 2A. Openings 28a, 28a are formed on the side of the box portion 28 that faces the side portion 22, and the first and second diaphragms 4-1, 4-2 are respectively exposed to the openings 28a, 28a. ing.
  • the “sound radiation direction” in which the first diaphragm 4-1 radiates sound is the direction of the arrow A1 shown in FIG.
  • the “sound radiation direction” in which the second diaphragm 4-2 radiates sound is the direction of the arrow A2 shown in FIG.
  • a thin speaker 40 having only one drive unit 5 and slightly oscillating diaphragms 4-1, 4-2 is used.
  • the thin speaker 40 includes first and second diaphragms 4-1 and 4-2 and a single drive unit 5.
  • the outer peripheral portions of the diaphragms 4-1 and 4-2 are supported by a frame 40a disposed in the box portion 28 and the port portion 24 via edges 4a1 and 4a2.
  • the frame 40a is formed with a radiation hole 40b that radiates sound from the back side due to the vibration of the first and second diaphragms 4-1, 4-2.
  • the drive unit 5 is the same as the first drive unit 5-1 of the fifth embodiment, and the same elements as those of the drive unit 5-1 are denoted by the same reference numerals as those in FIG.
  • the voice coil support part 53 of the driving part 5 and the diaphragms 4-1 and 4-2 are connected via a link mechanism 8.
  • the link mechanism 8 has link members 8A to 8D, and the link members 8A to 8D have joint portions 8a to 8d.
  • the link members 8A and 8B are connected to the diaphragms 4-1 and 4-2 through joint portions 8a and 8b, respectively.
  • the link members 8C and 8D are connected to the diaphragms 4-1 and 4-2 through joint portions 8c and 8d, respectively.
  • the link members 8A and 8B are connected to the voice coil support portion 53 via the joint portion 8e.
  • the link members 8C and 8D are connected to the voice coil support portion 53 via the joint portion 8f.
  • the joint portions 8a to 8f are portions that support or connect the link members 8A to 8D with respect to other portions so that the angles can be changed.
  • an acoustic signal is supplied to the magnetic circuit 52 of the drive unit 5.
  • the voice coil 51 and the voice coil support part 53 vibrate by linear movement.
  • the link members 8A to 8D of the link mechanism 8 transmit the vibration of the voice coil support portion 53 to the diaphragms 4-1, 4-2, and the diaphragms 4-1, 4-2 vibrate as indicated by an arrow C. That is, the vibration plates 4-1 and 4-2 vibrate so as to be close to and away from each other.
  • the vibration direction of the voice coil 51 and the baffle surface 21a are perpendicular to each other.
  • the sound corresponding to the acoustic signal is radiated in the sound radiation directions A1 and A2 by the vibration of the diaphragms 4-1 and 4-2, and this sound is detoured in the recess 2A and further guided to the directions B1 and B2. It is burned. That is, the sound emitted from one direction of the first diaphragm 4-1 and the sound emitted from one direction of the second diaphragm 4-2 are guided toward the baffle surface 21a.
  • the sound emitted from the drive unit 6 side (other direction) of the first diaphragm 4-1 and the sound emitted from the drive unit 6 side (other direction) of the second diaphragm 4-2 are: It is guided in the direction of the arrow B3 opposite to the direction of the baffle surface 21a through the radiation hole 40b and the port portion 24.
  • the distance d4 between the first and second diaphragms 4-1, 4-2 is smaller than the length D3 of the first and second diaphragms 4-1, 4-2. Therefore, the area occupied by the first and second diaphragms 4-1 and 4-2 with respect to the baffle plate 21 is smaller than when the thin speaker 40 is arranged in parallel with the baffle surface 21 a. . Thereby, it is suitable for installation in a place where the occupation space is limited. Even if the mounting area is limited, the area of the diaphragm can be sufficiently increased by the first and second diaphragms 4-1 and 4-2, and sufficient sound pressure can be obtained.
  • the driving unit drives the voice coil by a magnetic circuit
  • the driving unit may be a piezoelectric element, a magnetostrictive element, an artificial muscle, or the like.
  • the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose, configuration, or the like.
  • the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.

Landscapes

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

Abstract

Par accroissement de manière suffisante de la surface de la membrane, etc., se produisant dans un dispositif de haut-parleur, une pression sonore suffisante est atteinte. Le dispositif de haut-parleur de la présente invention comporte une enceinte acoustique (2) comprenant une surface (21a) d'écran acoustique, une première membrane (1-1) qui génère un son et une seconde membrane (1-2) qui génère un son dans une direction (A2) différente de celle de la première membrane (1-1). Le dispositif de haut-parleur comporte des unités (3-1, 3-2) d'entraînement qui sont soutenues par l'enceinte acoustique (2) directement ou par l'intermédiaire d'un autre composant et qui entraînent les première et seconde membranes (1-1, 1-2). Un renfoncement (2A) est disposé où la première membrane (1-1) et la seconde membrane (1-2) sont positionnées et qui s'ouvre vers la surface (21a) d'écran acoustique. La première membrane (1-1) et la seconde membrane (1-2) vibrent de manière à se déplacer plus proches de et à l'écart l'une de l'autre.
PCT/JP2012/082346 2012-12-13 2012-12-13 Dispositif de haut-parleur WO2014091598A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017104118A1 (fr) * 2015-12-17 2017-06-22 パナソニックＩｐマネジメント株式会社 Dispositif de haut-parleur
FR3067206A1 (fr) * 2017-05-30 2018-12-07 Devialet Ensemble comprenant une structure d'habitacle de vehicule automobile et un systeme de restitution sonore
WO2019086357A1 (fr) * 2017-11-01 2019-05-09 Mayht Bv Dispositif de haut-parleur à profil réduit
WO2020129262A1 (fr) * 2018-12-22 2020-06-25 フォスター電機株式会社 Dispositif de haut-parleur monté sur véhicule

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Publication number Priority date Publication date Assignee Title
JPH06217385A (ja) * 1993-01-14 1994-08-05 Sony Corp バスレフ型スピーカーボックス
WO2011046030A1 (fr) * 2009-10-15 2011-04-21 パイオニア株式会社 Dispositif de haut-parleur
WO2011077560A1 (fr) * 2009-12-25 2011-06-30 パイオニア株式会社 Vibreur de haut-parleur et dispositif de haut-parleur
JP2012156979A (ja) * 2011-01-06 2012-08-16 Zoruzo:Kk スピーカユニット及び同ユニットを用いたスピーカシステム

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06217385A (ja) * 1993-01-14 1994-08-05 Sony Corp バスレフ型スピーカーボックス
WO2011046030A1 (fr) * 2009-10-15 2011-04-21 パイオニア株式会社 Dispositif de haut-parleur
WO2011077560A1 (fr) * 2009-12-25 2011-06-30 パイオニア株式会社 Vibreur de haut-parleur et dispositif de haut-parleur
JP2012156979A (ja) * 2011-01-06 2012-08-16 Zoruzo:Kk スピーカユニット及び同ユニットを用いたスピーカシステム

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017104118A1 (fr) * 2015-12-17 2017-06-22 パナソニックＩｐマネジメント株式会社 Dispositif de haut-parleur
JPWO2017104118A1 (ja) * 2015-12-17 2018-10-04 パナソニックＩｐマネジメント株式会社 スピーカ装置
FR3067206A1 (fr) * 2017-05-30 2018-12-07 Devialet Ensemble comprenant une structure d'habitacle de vehicule automobile et un systeme de restitution sonore
WO2019086357A1 (fr) * 2017-11-01 2019-05-09 Mayht Bv Dispositif de haut-parleur à profil réduit
KR20200083991A (ko) * 2017-11-01 2020-07-09 메이츠 홀딩 비.브이. 로우 프로파일 라우드스피커 장치
JP2021501506A (ja) * 2017-11-01 2021-01-14 メイト ホールディング ビー．ブイ． 低寸法ラウドスピーカ装置
US11297415B2 (en) 2017-11-01 2022-04-05 Mayht Holding B.V. Low profile loudspeaker device
JP7280625B2 (ja) 2017-11-01 2023-05-24 メイト ホールディング ビー．ブイ． 低寸法ラウドスピーカ装置
KR102547719B1 (ko) * 2017-11-01 2023-06-26 메이츠 홀딩 비.브이. 로우 프로파일 라우드스피커 장치
EP4236368A3 (fr) * 2017-11-01 2023-09-13 Mayht Holding B.V. Haut-parleur à profil bas
EP4243446A3 (fr) * 2017-11-01 2023-11-29 Sonos Mighty Holdings B.V. Haut-parleur à profil bas
WO2020129262A1 (fr) * 2018-12-22 2020-06-25 フォスター電機株式会社 Dispositif de haut-parleur monté sur véhicule

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