WO2005079107A1 - 骨伝導デバイス及びその製造方法 - Google Patents
骨伝導デバイス及びその製造方法 Download PDFInfo
- Publication number
- WO2005079107A1 WO2005079107A1 PCT/JP2005/001913 JP2005001913W WO2005079107A1 WO 2005079107 A1 WO2005079107 A1 WO 2005079107A1 JP 2005001913 W JP2005001913 W JP 2005001913W WO 2005079107 A1 WO2005079107 A1 WO 2005079107A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- diaphragm
- yoke
- bone conduction
- fixing
- conduction device
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2400/00—Loudspeakers
- H04R2400/01—Transducers used as a loudspeaker to generate sound aswell as a microphone to detect sound
-
- 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
Definitions
- the present invention relates to a bone conduction device and a method of manufacturing the same, and more particularly, to a bone conduction device including a bone conduction speaker and a bone conduction microphone that can be easily manufactured and compactly manufactured, and a method of manufacturing the same. .
- a yoke 31 having a central magnetic pole 32 around which a voice coil 33 is wound is provided, the yoke 31 is extended in four directions, and magnets 34 are respectively attached to two opposing projections 37 of the extension.
- the diaphragm fixing portions 36, 36 are erected on the other two projecting portions 38, 38, and the diaphragm 35 is fixed to the diaphragm fixing portions 36, 36 by fixing screws 46.
- the diaphragm 35 has a central opening 41, and a plate yoke 43 fixed to the diaphragm 35 is supported in the central opening 41 so as to be able to vibrate.
- the diaphragm 35 and the plate yoke 43 are spot-welded at two upper and lower contact points 47 in order to ensure sufficient mechanical strength and stable output (see FIG. 8 and Figure 10).
- this spot welding warping, deformation, and thickness reduction due to high heat occur, and the surface of the joined plate yoke 43 and diaphragm 35 is distorted and a step is generated.
- the plate yoke 43 and the diaphragm 35 are polished (the polished surface in FIG. 10).
- polishing is performed after welding the diaphragm 35, it is difficult to control the amount of polishing.
- This polishing after the welding tends to increase the thickness (particularly the thickness of the diaphragm 35). It is in.
- the minimum resonance frequency of each product varies (minimum resonance frequency Is mainly determined by the thickness of the diaphragm 35. )
- polishing debris is generated in the polishing process when it is not enough, but it is difficult (it takes time) to completely remove the polishing debris.
- the output of a magnetic acoustic conversion device including a speaker and a microphone of this type is determined by the gap between the yoke and the diaphragm (plate yoke).
- the gap between the yoke and the diaphragm plate yoke.
- Patent Document 1 Japanese Patent No. 2967777
- the conventional osteoconductive device and the method of manufacturing the same have many problems as described above. Therefore, the present invention does not have such problems. This eliminates the need for troublesome removal of polishing debris and minimizes variations in the lowest resonance frequency of the product due to variations in the thickness of the diaphragm, thus ensuring stable and reliable product quality. It is an object of the present invention to provide an osteoconductive device capable of contributing to the performance and a method for manufacturing the same.
- Another object of the present invention is to provide a bone conduction device capable of easily and reliably setting a predetermined gap between a yoke and a diaphragm (plate yoke) at the time of assembly, and a method of manufacturing the same. Is to provide a method.
- the present invention includes a yoke that supports a voice coil and a magnet, and a diaphragm that is provided on the yoke while maintaining a small gap, and the diaphragm has a central opening.
- a plate yoke is arranged in that portion, and the outer edge of the diaphragm contact portion of the plate yoke is laser-welded to the diaphragm, thereby solving the above problem. did.
- the present invention also includes a yoke that carries a voice coil and a magnet, and a diaphragm that is provided on the yoke while maintaining a narrow gap, and the diaphragm is bent at both ends. A bent portion is fixed to an outer surface of a diaphragm fixing wall of the yoke.
- a method of manufacturing a bone conduction device includes a yoke that supports a voice coil and a magnet, and a vibration plate that is provided on the yoke while maintaining a small gap.
- the diaphragm has a central opening, a plate yoke is provided in that portion, and an outer edge of the diaphragm abutting portion is provided on the diaphragm with a laser. It is characterized by being fixed by welding.
- a method for manufacturing a bone conduction device for solving the above-mentioned problems is provided with a yoke supporting a voice coil and a magnet, and a gap held on the yoke.
- a method for manufacturing a bone conduction device comprising: a diaphragm; bending both ends of the diaphragm; and fixing the bent portion to an outer surface of a diaphragm fixing wall of the yoke.
- a spacer having a thickness corresponding to the narrow gap is inserted between the diaphragm and the shock. It is preferable that the spacer be removed after the fixing operation.
- the number of steps for processing the parts is small V, so that the polishing step for the surface with high production efficiency is not required, which is troublesome, and the work for removing the polishing debris is unnecessary.
- Variations in the lowest resonance frequency of the product due to variations in the thickness of the diaphragm as much as possible are prevented as much as possible, which has the effect of contributing to the stability and reliability of product quality.
- the bone conduction speaker and the bone conduction microphone are output from the diaphragm, or are transmitted through the diaphragm.
- the difference between picking up the vibration is a certain force.
- the bone conduction device in the following description should be understood to include both, since the structure may be substantially the same.
- the basic configuration of the osteoconductive device according to the present invention is not different from the above-described conventional one. That is, a yoke 1 having a central magnetic pole around which a voice coil is wound and extending in four directions, a magnet 2 disposed on a two-direction extension of the yoke 1, and a yoke 1 on another two-direction extension And a diaphragm 4 fixed on the diaphragm fixing part 3.
- the configuration of the bone conduction device is a so-called outer magnet type in which the magnet 2 is arranged outside the voice coil, and is a so-called inner magnet type in which the magnet 2 is arranged inside the voice coil.
- diaphragm 4 has a shape that protrudes in all directions, and has a central opening 5 that is long in the vertical direction in the figure.
- a plate yoke 6 facing the central opening 5 is attached to the diaphragm 4.
- the plate yoke 6 extends along the central opening 5, the portion facing the central opening 5 is made thick, and both end portions in contact with the diaphragm 4 are made thin.
- the plate yoke 6 is appropriately formed with a tapped hole 9 for fixing the plate yoke.
- the fixing of the plate yoke 6 to the diaphragm 4 is performed by laser welding between the edges of the diaphragm contact portions 7 at both ends thereof and the diaphragm 4. Welding may be performed at one location for each diaphragm contact part 7, but it is desirable to perform welding at two or more locations for strength and stability. is there). The welding location may be at the tip of the diaphragm contact portion 7 (FIG. 1) or at both ends (FIG. 2).
- Laser welding is a method in which a metal is locally melted and solidified by a concentrated high energy density heat source and joined, and does not involve welding deformation such as a reduction in plate thickness. Therefore, according to this method, since the polishing work for correcting the step is not required, the man-hour for processing the parts is reduced.
- the diaphragm 4 shown in FIGS. 1 and 2 is larger than the magnet placement extension (vertical direction in FIGS. 1 and 2) as in FIGS. And has a screwing portion 7 projecting left and right.
- a screw hole 8 is formed in the screw fixing portion 7, and a fixing screw is screwed into the diaphragm fixing portion 3 through the screw hole 8, whereby the diaphragm 4 is fixed to the diaphragm fixing portion 3.
- diaphragm 4 shown in Fig. 3 has screw fixing portion 7, and diaphragm fixing portion 3 is also small. In this case, the edge of the diaphragm 4 is laser-welded to the edge of the diaphragm fixing portion 3.
- the bone conduction device shown in FIGS. 4 and 5 is an inner magnet type in which the magnet 2 is disposed inside the voice coil 9, and both ends of the diaphragm 4 are bent, and the bent portion 10 is formed.
- Numerals 10 and 10 are fixed to the outer side surfaces of diaphragm fixing walls 13 and 13 erected on both sides of yoke base 11 different from the side on which outer yoke 12 is installed.
- the fixing of the bent portions 10, 10 to the outer surfaces of the diaphragm fixing walls 13, 13 is preferably performed by welding, bonding, or the like, preferably by laser welding (see black circles in FIG. 6).
- a tape-shaped spacer 14 is inserted between the diaphragm 4 and the outer yoke 12, and the end portion is fixed. Hold it in the pulled-out state (Fig. 7).
- the spacer 14 has a thickness corresponding to a predetermined gap between the diaphragm 4 and the outer yoke 12. Since the spacer 14 is interposed therebetween, a predetermined gap is secured between the diaphragm 4 and the outer yoke 12, and in this state, the bent portion 10 of the diaphragm 4 is attached to the diaphragm fixing wall 13. Secure to the outside surface. After the completion of the fixing operation, the spacer 14 is pulled out, so that a predetermined gap is maintained there.
- FIG. 1 is a view showing a method of fixing a plate yoke constituting a bone conduction device according to the present invention to a diaphragm.
- FIG. 2 is a view showing another method of fixing a plate yoke constituting a bone conduction device according to the present invention to a diaphragm.
- Fig. 3 is a view showing a method of fixing the yoke and the diaphragm constituting the bone conduction device according to the present invention.
- FIG. 4 is a perspective view showing another configuration of the osteoconductive device according to the present invention.
- FIG. 5 is an exploded perspective view of the bone conduction device shown in FIG.
- FIG. 6 is a side view of the bone conduction device shown in FIG. 4.
- FIG. 7 is a longitudinal sectional view showing the method of manufacturing the osteoconductive device shown in FIG.
- FIG. 8 is a view showing a conventional bone conduction speaker.
- FIG. 9 is an exploded perspective view of a conventional bone conduction speaker.
- FIG. 10 is a view showing a method of fixing a yoke and a diaphragm constituting a conventional bone conduction speaker.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05709965A EP1715716A1 (en) | 2004-02-13 | 2005-02-09 | Bone-conduction device and method of manufacturing the same |
CA000009107A CA2546532A1 (en) | 2004-02-13 | 2005-02-09 | Bone-conduction device and method of manufacturing the same |
AU2005212989A AU2005212989A1 (en) | 2004-02-13 | 2005-02-09 | Bone-conduction device and method of manufacturing the same |
JP2005517949A JPWO2005079107A1 (ja) | 2004-02-13 | 2005-02-09 | 骨伝導デバイス及びその製造方法 |
US10/595,639 US20080292118A1 (en) | 2004-02-13 | 2005-09-02 | Bone-Conduction Device and Method of Manufacturing the Same |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004037229 | 2004-02-13 | ||
JP2004-037229 | 2004-02-13 | ||
JP2004106702 | 2004-03-31 | ||
JP2004-106702 | 2004-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005079107A1 true WO2005079107A1 (ja) | 2005-08-25 |
Family
ID=34863464
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/001913 WO2005079107A1 (ja) | 2004-02-13 | 2005-02-09 | 骨伝導デバイス及びその製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20080292118A1 (ja) |
EP (1) | EP1715716A1 (ja) |
JP (1) | JPWO2005079107A1 (ja) |
KR (1) | KR20060105750A (ja) |
AU (1) | AU2005212989A1 (ja) |
CA (1) | CA2546532A1 (ja) |
WO (1) | WO2005079107A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103096221A (zh) * | 2013-01-31 | 2013-05-08 | 美特科技(苏州)有限公司 | 激光焊接扬声器 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9462365B1 (en) | 2012-03-14 | 2016-10-04 | Google Inc. | Structure and manufacture of bone-conduction transducer |
US8989410B2 (en) | 2012-10-22 | 2015-03-24 | Google Inc. | Compact bone conduction audio transducer |
ITMI20131797A1 (it) * | 2013-10-29 | 2015-04-30 | Buhel S R L | Trasduttore elettromagnetico per generare vibrazioni per la conduzione ossea di suoni e/o parole |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06210479A (ja) * | 1993-01-14 | 1994-08-02 | Sumitomo Metal Ind Ltd | 薄板のレーザー溶接方法 |
JPH1159902A (ja) * | 1997-08-06 | 1999-03-02 | Matsushita Electric Ind Co Ltd | 積層構造部品の組立方法及びその装置 |
JPH11150790A (ja) * | 1997-11-14 | 1999-06-02 | Matsushita Electric Ind Co Ltd | スピーカ |
JPH11355871A (ja) * | 1998-06-08 | 1999-12-24 | Temco Japan:Kk | 骨導スピ−カ |
JP2001313989A (ja) * | 2000-04-18 | 2001-11-09 | Dowumitec Corp | 骨導振動子及びこれを利用した骨導スピーカヘッドセット |
JP2002165797A (ja) * | 2000-12-01 | 2002-06-11 | Seiko Instruments Inc | 運動能力測定装置 |
JP2003299191A (ja) * | 2002-04-05 | 2003-10-17 | Matsushita Electric Ind Co Ltd | スピーカおよびその製造方法 |
JP2003340370A (ja) * | 2002-05-28 | 2003-12-02 | Temuko Japan:Kk | 骨伝導スピーカ |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56168499A (en) * | 1980-05-29 | 1981-12-24 | Citizen Watch Co Ltd | Structure of electomagnetic sound generator |
JPH0543598Y2 (ja) * | 1984-11-09 | 1993-11-02 | ||
JP3119052B2 (ja) * | 1993-09-30 | 2000-12-18 | 松下電器産業株式会社 | 平板状画像表示装置 |
JPH10328862A (ja) * | 1997-06-05 | 1998-12-15 | Harness Sogo Gijutsu Kenkyusho:Kk | レーザ溶接方法 |
JPH11230177A (ja) * | 1998-02-10 | 1999-08-27 | Tok Bearing Co Ltd | フランジ付き小形ベアリング |
-
2005
- 2005-02-09 CA CA000009107A patent/CA2546532A1/en not_active Abandoned
- 2005-02-09 EP EP05709965A patent/EP1715716A1/en not_active Withdrawn
- 2005-02-09 JP JP2005517949A patent/JPWO2005079107A1/ja active Pending
- 2005-02-09 AU AU2005212989A patent/AU2005212989A1/en not_active Abandoned
- 2005-02-09 WO PCT/JP2005/001913 patent/WO2005079107A1/ja not_active Application Discontinuation
- 2005-02-09 KR KR1020067008020A patent/KR20060105750A/ko not_active Application Discontinuation
- 2005-09-02 US US10/595,639 patent/US20080292118A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06210479A (ja) * | 1993-01-14 | 1994-08-02 | Sumitomo Metal Ind Ltd | 薄板のレーザー溶接方法 |
JPH1159902A (ja) * | 1997-08-06 | 1999-03-02 | Matsushita Electric Ind Co Ltd | 積層構造部品の組立方法及びその装置 |
JPH11150790A (ja) * | 1997-11-14 | 1999-06-02 | Matsushita Electric Ind Co Ltd | スピーカ |
JPH11355871A (ja) * | 1998-06-08 | 1999-12-24 | Temco Japan:Kk | 骨導スピ−カ |
JP2001313989A (ja) * | 2000-04-18 | 2001-11-09 | Dowumitec Corp | 骨導振動子及びこれを利用した骨導スピーカヘッドセット |
JP2002165797A (ja) * | 2000-12-01 | 2002-06-11 | Seiko Instruments Inc | 運動能力測定装置 |
JP2003299191A (ja) * | 2002-04-05 | 2003-10-17 | Matsushita Electric Ind Co Ltd | スピーカおよびその製造方法 |
JP2003340370A (ja) * | 2002-05-28 | 2003-12-02 | Temuko Japan:Kk | 骨伝導スピーカ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103096221A (zh) * | 2013-01-31 | 2013-05-08 | 美特科技(苏州)有限公司 | 激光焊接扬声器 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005079107A1 (ja) | 2007-08-02 |
EP1715716A1 (en) | 2006-10-25 |
US20080292118A1 (en) | 2008-11-27 |
CA2546532A1 (en) | 2005-08-25 |
KR20060105750A (ko) | 2006-10-11 |
AU2005212989A1 (en) | 2005-08-25 |
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