WO2014083986A1 - 骨伝導スピーカユニット - Google Patents
骨伝導スピーカユニット Download PDFInfo
- Publication number
- WO2014083986A1 WO2014083986A1 PCT/JP2013/078995 JP2013078995W WO2014083986A1 WO 2014083986 A1 WO2014083986 A1 WO 2014083986A1 JP 2013078995 W JP2013078995 W JP 2013078995W WO 2014083986 A1 WO2014083986 A1 WO 2014083986A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conduction speaker
- bone conduction
- contact
- elastic
- housing
- Prior art date
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Classifications
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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
- H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/06—Loudspeakers
- H04R9/066—Loudspeakers using the principle of inertia
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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
- H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
- H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
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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
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/13—Hearing devices using bone conduction transducers
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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
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
Definitions
- the present invention relates to a bone conduction speaker unit, and more particularly to a bone conduction speaker unit that does not cause a problem of sound leakage when incorporated in a mobile phone or the like.
- the bone conduction speaker unit converts an audio signal into vibration and transmits it to the skull, etc., and since it is compact and lightweight and can be used under noise, it is widely used in communication devices such as mobile phones these days. It has become to.
- the present invention has been made to solve such a problem, and can sufficiently prevent the occurrence of sound leakage during non-calling and exhibits the performance of a bone conduction speaker equivalent to the conventional one during calling. It is another object of the present invention to provide a bone conduction speaker unit that can be manufactured and can be manufactured at a simple cost, and can be easily incorporated into a main body case of a mobile phone or the like.
- the invention according to claim 1 for solving the above-mentioned problem is a bone conduction speaker unit configured by incorporating a bone conduction speaker main body in a housing in which an elastic cover is mounted on an upper surface, and the bone conduction speaker main body.
- a bone conduction speaker unit configured by incorporating a bone conduction speaker main body in a housing in which an elastic cover is mounted on an upper surface, and the bone conduction speaker main body.
- a gap is held between the lower surface of the contact and the upper surface of the plate yoke of the bone conduction speaker body, and when the pressing force is applied to the elastic cover during use, the lower surface of the contact is an elastic plate on the upper surface of the plate yoke.
- the bone conduction speaker unit is in a contact state with the bone conduction speaker unit.
- the contact is formed in a shape having a flange at an upper portion, and is provided on an inner top surface of the elastic cover. The contact is wrapped so that the lower surface of the contact is exposed by locking the flange. It is supported by the annular holding part to hold.
- the invention according to claim 4 for solving the above-mentioned problem is a bone conduction speaker unit configured by incorporating a bone conduction speaker body in a housing in which an elastic cover is mounted on an upper surface, and the bone conduction speaker body. Is disposed in the housing via an elastic base, and a thick part is integrally formed on the inner top surface of the elastic cover, and when the elastic cover is mounted on the housing, A gap is maintained between the bone conduction speaker main body and the upper surface of the plate yoke, and when the pressing force is applied to the elastic cover during use, the lower surface of the thick portion comes into contact with the upper surface of the plate yoke.
- This is a bone conduction speaker unit.
- a recess is formed on the inner bottom surface of the housing, and the entire recess is covered with the elastic base, so that a gap is formed below the elastic base.
- the present invention is as described above.
- the pressing force is not applied to the elastic cover, it is between the lower surface of the contact and the upper surface of the elastic plate, or between the lower surface of the thick portion and the upper surface of the plate yoke. Since the gap is always held between them, the vibration is inadvertently transmitted to the elastic cover and the generation of sound vibrations is reliably prevented, and sound leakage is reliably prevented. Since the contact or the thick part supported by the elastic cover is pushed inward and makes contact with the plate yoke in a planar shape, the vibration of the diaphragm is reliably transmitted to the elastic cover. There is an effect to fully demonstrate the function.
- the bone conduction speaker according to the present invention has a simple structure, can be manufactured at a low cost, and is completed as an independent unit with little sound leakage, so that it can be incorporated into a mobile phone case or the like as it is. effective.
- FIG. 1 is a longitudinal sectional view of a first embodiment of a bone conduction speaker unit according to the present invention.
- the bone conduction speaker unit according to the present invention is incorporated in a housing 1 and the housing 1.
- the bone conduction speaker main body 2 has a voice coil 13 disposed so as to surround a center pole 12 provided in the central portion of the yoke 11, and a pair of rod-shaped members on both sides of the voice coil 13.
- the magnets 14 and 14 are fixed, and the diaphragm 15 is arranged so as to cover the voice coil 13 and the magnets 14 and 14.
- the diaphragm 15 is fixed by screwing both ends of the diaphragm 15 to the upper surface of the side wall 16 erected on both ends of the yoke 11. At that time, a gap is maintained between the diaphragm 15 and the upper surface of the voice coil 13 (see FIG. 1).
- An opening 18 corresponding to the plate yoke 17 is formed in the vibration plate 15, and both end portions 17 a in the length direction of the plate yoke 17 extending beyond the opening 18 are fixed to the edge portion of the opening 18. Is installed so as to close the opening 18.
- the plate yoke 17 vibrates with the vibration of the diaphragm 15.
- the above-mentioned form is a so-called outer magnet type configuration in which the magnets 14 and 14 are arranged outside the voice coil 13, but conversely, the magnet is arranged inside the voice coil (the magnet also serves as a center pole).
- a so-called inner magnet type configuration can be adopted.
- the elastic plate 21 is fixed to the upper surface of the plate yoke 17 of the bone conduction speaker main body 2 having the above-described configuration, and the elastic base 22 is disposed on the rear surface of the yoke 11.
- the elastic base 22 has a size corresponding to the size of the inner bottom surface of the housing 1 with which it abuts.
- the elastic plate 21 and the elastic base 23 are made of, for example, a foam material such as urethane foam or acrylic foam, or a low hardness silicone rubber, urethane rubber or other rubber material.
- the housing 1 is usually a hard resin container, and the elastic cover 3 is molded using a rubber material such as low hardness silicone rubber or urethane rubber, or other low altitude material, and is coupled to the housing 1.
- a rubber material such as low hardness silicone rubber or urethane rubber, or other low altitude material
- an opening for drawing out the lead wire 19 extending from the voice coil 13 is formed.
- the holding portion 4 of the contact 5 that is in contact with the plate yoke 17 via the elastic plate 21 is formed.
- the contact 5 is formed in a shape having a flange 5 a at the top, and the holding portion 4 is an annular shape that locks the flange 5 a and exposes the lower surface of the contact 5.
- the contact 5 can be tightly fitted in the holding part 4 by expanding the holding part 4 by using its elasticity.
- the bone conduction speaker main body 2 is usually inserted into the housing 1 in a state where the elastic base 22 is fixed to the back surface of the yoke 11 in advance, and the elastic base 22 is fixed to the inner bottom surface of the housing 1. Installed. Then, a lead wire 19 extending from the voice coil 13 is drawn out from an opening formed in the side wall of the housing 1. Thereafter, the elastic cover 3 is fitted into the housing 1. At this time, a gap a is secured between the lower surface of the contact 5 and the elastic plate 21 on the plate yoke 17. The gap a is applied to the contact 5 when a certain force is applied to the elastic cover 3, that is, when the elastic cover 3 is pushed inward as the elastic cover 3 is pushed against the side of the head or the like during use. The interval is set such that the lower surface can be securely adhered to the elastic plate 21.
- the bone conduction speaker main body 2 Since the vibration output of the bone conduction speaker main body 2 is generated when a part of the bone conduction speaker main body 2 comes into contact with the housing 1, the bone conduction speaker main body 2 is prevented from contacting the housing 1 directly during non-calling as much as possible. It is required to be kept floating inside. However, in the case of the bone conduction speaker unit configured as described above, the bone conduction speaker main body 2 is fixed to the inner bottom surface of the housing 1 via the elastic base 22 provided on the back surface of the yoke 11, and also when not talking. In this case, since the plate yoke 17 is supported in a state of being separated from the contact 5 installed in the housing 1 via the elastic cover 3 by the gap a, the bone conduction speaker main body 2 is in direct contact with the housing 1. No, it is an ideal configuration.
- the yoke 11 is a portion that is less likely to transmit vibration than the vibration system portion, that is, the portion of the vibration plate 15 and the plate yoke 17 fixed thereto, and therefore, as in the first embodiment shown in FIG.
- the isolation with respect to the housing 1 is sufficient only by installing the elastic base 22 between the inner bottom surface of the housing 1, but the modification shown in FIG. 2 further enhances this isolation effect. Is.
- the shallow recessed portion 6 is formed on the inner bottom surface of the housing 1, and the entire recessed portion 6 is covered with the elastic base 22, and other than that, as in the case of the above embodiment. Composed.
- the lower peripheral edge of the elastic base 22 provided on the back surface of the yoke 11 is fixed on the peripheral bank of the concave portion 6, thereby lowering the elastic base 22.
- a gap b sealed by the elastic base 22 is formed.
- the plate yoke 17 and the elastic plate 21 on the upper surface of the elastic plate 3 are separated from the contact 5 by the gap a when no call is applied to the elastic cover 3. Even if the elastic plate 21 vibrates, the vibration is not transmitted to the contact 5, so that unintended sound leakage is prevented.
- the elastic cover 3 When the elastic cover 3 is pressed against the head side surface or the like during a call, the elastic cover 3 is pushed inward and the lower surface of the contact 5 comes into surface contact with the plate yoke 17 via the elastic plate 21.
- the vibration When vibration is generated by the audio signal in this state, the vibration is transmitted to the contact 5 via the plate yoke 17 and the elastic plate 21, and is transmitted from the contact 5 to the skull, thereby enabling bone conduction reception.
- the elastic plate 21 is interposed between the plate yoke 17 and the contact 5, there is no occurrence of an abnormal noise due to the contact between the plate yoke 17 and the contact 5.
- FIG. 3 shows a second embodiment of the present invention, which is a bone conduction speaker unit constructed by incorporating a bone conduction speaker body 2 in a housing 1 on which an elastic cover 3 is mounted.
- the point that the bone conduction speaker main body 2 is arranged in the housing 1 via the elastic base 22 is the same as that of the first embodiment, and as a modification thereof, the same as shown in FIG. In some cases, the recessed portion 6 is provided.
- the contact 5 is not used, and instead, the thick portion 7 having a flat bottom surface is integrally formed on the inner top surface of the elastic cover 3, and the elastic cover 3 is attached to the housing 1. Is formed so that the gap a is held between the lower surface of the thick portion 7 and the upper surface of the plate yoke 17 of the bone conduction speaker main body 2.
- the plate yoke 17 is separated from the thick portion 7 by the gap a at the time of non-call when the pressing force is not applied to the elastic cover 3. Even if the yoke 17 vibrates, the vibration is not transmitted to the thick portion 7, in other words, the elastic cover 3, thereby preventing unintended sound leakage.
- the elastic cover 3 is pushed inward during a call, the lower surface of the thick portion 7 comes into surface contact with the plate yoke 17.
- the vibration is generated by an audio signal in this state, the vibration is thick from the plate yoke 17. The signal is transmitted to the skull via the part 7, so that bone conduction reception is possible. And since the thick part 7 is an elastic material, the plate yoke 17 and the thick part 7 do not contact, and an abnormal noise is not generated.
- the bone conduction speaker unit according to the present invention has the above-described configuration and is completed as an independent unit with little sound leakage, the bone conduction speaker unit can be used as it is by being incorporated into a main body case or the like of a mobile phone as it is. Very convenient to use. And since the space
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Telephone Set Structure (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims (5)
- 上面に弾性カバーが被装されるハウジング内に骨伝導スピーカ本体を組み込んで構成される骨伝導スピーカユニットであって、
前記骨伝導スピーカ本体は弾性ベースを介して前記ハウジング内に配置されると共に、そのプレートヨーク上面に弾性板が定着され、前記弾性カバーの内天面にコンタクトが配備され、前記弾性カバーを前記ハウジングに被装した際に前記コンタクトの下面と前記骨伝導スピーカ本体のプレートヨークの上面との間に空隙が保持され、使用時に前記弾性カバーに押圧力が加わった際に前記コンタクトの下面が前記プレートヨーク上面の弾性板に当接状態となることを特徴とする骨伝導スピーカユニット。 - 前記ハウジングの内底面に凹陥部が形成され、前記凹陥部の全体が前記弾性ベースによって覆われることにより、前記弾性ベースの下側に空隙が形成された、請求項1に記載の
骨伝導スピーカユニット。 - 前記コンタクトは上部にフランジを有する形状に形成され、前記弾性カバーの内天面に設けられる、前記フランジを係止して前記コンタクトの下面が露出するように前記コンタクトを包持する環状の包持部によって支持される、請求項1又は2に記載の骨伝導スピーカユニット。
- 上面に弾性カバーが被装されるハウジング内に骨伝導スピーカ本体を組み込んで構成される骨伝導スピーカユニットであって、
前記骨伝導スピーカ本体は弾性ベースを介して前記ハウジング内に配置され、前記弾性カバーの内天面には肉厚部が一体に形成され、前記弾性カバーを前記ハウジングに被装した際に前記肉厚部の下面と前記骨伝導スピーカ本体のプレートヨークの上面との間に空隙が保持され、使用時に前記弾性カバーに押圧力が加わった際に前記肉厚部の下面が前記プレートヨークの上面に当接状態となることを特徴とする骨伝導スピーカユニット。 - 前記ハウジングの内底面に凹陥部が形成され、前記凹陥部の全体が前記弾性ベースによって覆われることにより、前記弾性ベースの下側に空隙が形成された、請求項4に記載の骨伝導スピーカユニット。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014550093A JPWO2014083986A1 (ja) | 2012-11-27 | 2013-10-25 | 骨伝導スピーカユニット |
EP13858726.6A EP2779684B1 (en) | 2012-11-27 | 2013-10-25 | Bone-conduction speaker unit |
AU2013350472A AU2013350472B2 (en) | 2012-11-27 | 2013-10-25 | Bone-conduction speaker unit |
KR1020147016333A KR101765378B1 (ko) | 2012-11-27 | 2013-10-25 | 골전도 스피커 유닛 |
US14/364,135 US9253563B2 (en) | 2012-11-27 | 2013-10-25 | Bone conduction speaker unit |
CN201380056194.0A CN104823458A (zh) | 2012-11-27 | 2013-10-25 | 骨传导扬声器单元 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-258684 | 2012-11-27 | ||
JP2012258684 | 2012-11-27 | ||
JP2013172564 | 2013-08-22 | ||
JP2013-172564 | 2013-08-22 |
Publications (1)
Publication Number | Publication Date |
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WO2014083986A1 true WO2014083986A1 (ja) | 2014-06-05 |
Family
ID=50827632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/078995 WO2014083986A1 (ja) | 2012-11-27 | 2013-10-25 | 骨伝導スピーカユニット |
Country Status (8)
Country | Link |
---|---|
US (1) | US9253563B2 (ja) |
EP (1) | EP2779684B1 (ja) |
JP (1) | JPWO2014083986A1 (ja) |
KR (1) | KR101765378B1 (ja) |
CN (1) | CN104823458A (ja) |
AU (1) | AU2013350472B2 (ja) |
TW (1) | TWI535298B (ja) |
WO (1) | WO2014083986A1 (ja) |
Cited By (5)
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CN107454491A (zh) * | 2017-07-25 | 2017-12-08 | 维沃移动通信有限公司 | 一种移动终端 |
WO2018193790A1 (ja) * | 2017-04-21 | 2018-10-25 | 株式会社テムコジャパン | 骨伝導スピーカユニット |
WO2019131283A1 (ja) | 2017-12-28 | 2019-07-04 | 株式会社テムコジャパン | 骨伝導スピーカユニット |
WO2024161927A1 (ja) * | 2023-01-31 | 2024-08-08 | 株式会社オーディオテクニカ | 音響機器 |
WO2024210179A1 (ja) * | 2023-04-07 | 2024-10-10 | 株式会社オーディオテクニカ | 電気音響変換器およびヘッドホン |
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- 2013-10-25 US US14/364,135 patent/US9253563B2/en not_active Expired - Fee Related
- 2013-10-25 KR KR1020147016333A patent/KR101765378B1/ko active IP Right Grant
- 2013-10-25 WO PCT/JP2013/078995 patent/WO2014083986A1/ja active Application Filing
- 2013-10-25 AU AU2013350472A patent/AU2013350472B2/en not_active Ceased
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Also Published As
Publication number | Publication date |
---|---|
KR101765378B1 (ko) | 2017-08-04 |
TW201440535A (zh) | 2014-10-16 |
US9253563B2 (en) | 2016-02-02 |
JPWO2014083986A1 (ja) | 2017-01-05 |
US20150264473A1 (en) | 2015-09-17 |
EP2779684A4 (en) | 2015-08-12 |
EP2779684A1 (en) | 2014-09-17 |
AU2013350472A1 (en) | 2014-07-03 |
KR20150089926A (ko) | 2015-08-05 |
CN104823458A (zh) | 2015-08-05 |
AU2013350472B2 (en) | 2017-02-23 |
TWI535298B (zh) | 2016-05-21 |
EP2779684B1 (en) | 2016-05-25 |
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