WO1998047317B1 - Slotted diaphragm loudspeaker - Google Patents
Slotted diaphragm loudspeakerInfo
- Publication number
- WO1998047317B1 WO1998047317B1 PCT/US1998/007016 US9807016W WO9847317B1 WO 1998047317 B1 WO1998047317 B1 WO 1998047317B1 US 9807016 W US9807016 W US 9807016W WO 9847317 B1 WO9847317 B1 WO 9847317B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- loudspeaker
- voice coil
- motor stator
- diaphragm
- flux return
- Prior art date
Links
- 230000004907 flux Effects 0.000 claims abstract 43
- 210000000614 Ribs Anatomy 0.000 claims abstract 13
Abstract
A loudspeaker (10) comprises a diaphragm having an outer perimeter (24), a voice coil (18), a frame for supporting the diaphragm, and a motor stator (26) providing a magnetic field in which the voice coil is supported. Ribs (43) extend outwardly at the perimeter (24) of the diaphragm to mount the voice coil to the perimeter of the diaphragm. The motor stator (26) includes at least one inner flux return (32) providing slots (46) through which the ribs (43) extend between the perimeter of the diaphragm and the voice coil (18).
Claims
1. A loudspeaker comprising a diaphragm having an outer perimeter, a voice coil, means for mounting the voice coil to the outer perimeter, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported, current through the voice coil reciprocating the voice coil and the diaphragm coupled thereto, the means for mounting the voice coil to the outer perimeter comprising ribs extending outwardly at the outer perimeter of the diaphragm, the motor stator including at least one inner flux return providing slots through which the ribs extend between the outer perimeter of the diaphragm and the voice coil.
2. The loudspeaker of claim 1 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the at least one inner flux return.
3. The loudspeaker of claim 1 wherein the at least one inner flux return comprises multiple inner flux returns, the slots being defined between adjacent ones of the inner flux returns.
4. The loudspeaker of claim 3 wherein the motor stator further comprises at least one permanent magnet oriented adjacent at least one of the multiple inner flux returns.
5. The loudspeaker of claim 4 wherein the motor stator comprises at least one permanent magnet oriented adjacent all of the multiple inner flux returns.
6. The loudspeaker of claim 5 wherein the motor stator comprises at least two permanent magnets oriented adjacent all of the multiple inner flux returns.
7. The loudspeaker of claim 1 or 3 wherein the motor stator further comprises at least one outer flux return, the at least one inner flux return and the at least one outer flux return defining between them an air gap, the magnetic field being established in the air gap, and the means for supporting the voice coil in the magnetic field comprising means for supporting the voice coil in the air gap.
8. The loudspeaker of claim 7 wherein the motor stator further comprises a permanent magnet oriented adjacent the at least one inner flux return and the at least one outer flux return.
9. The loudspeaker of claim 2, 4, 5 or 6 wherein the motor stator further comprises at least one outer flux return, the permanent magnet oriented between the at least one inner flux return and the at least one outer flux return.
10. A loudspeaker comprising a diaphragm having an outer perimeter and a central axis defining between them a relatively inner region of the diaphragm extending outwardly from the axis and a relatively outer region of the diaphragm extending inwardly from the outer perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported, current through the voice coil reciprocating the voice coil and the diaphragm coupled thereto, the means for mounting the voice coil comprising first ribs extending outwardly from the inner region, the first ribs coupled to the voice coil between the inner and outer regions, the motor stator including at least one inner flux return providing first slots through which the first ribs extend between the inner region and the voice coil.
11. The loudspeaker of claim 10 wherein the at least one inner flux return comprises multiple inner flux returns, the first slots being defined between adjacent ones of the inner flux returns.
12. The loudspeaker of claim 11 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the multiple inner flux returns.
13. The loudspeaker of claim 12 wherein the motor stator comprises multiple permanent magnets oriented adjacent the multiple inner flux returns.
14. The loudspeaker of claim 10 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the at least one inner flux return.
15. The loudspeaker of claim 10 further comprising second ribs extending inwardly from the outer region, the second ribs coupled to the voice coil between the inner and outer regions, the motor stator including at least one outer flux return providing second slots through which the second ribs extend between the outer region and the voice coil.
16 The loudspeaker of claim 15 wherein the at least one inner flux return and the at least one outer flux return define between them an air gap, the magnetic field being established in the air gap.
- -
17. The loudspeaker of claim 16 wherein the at least one outer flux return comprises multiple outer flux returns, the second slots being defined between adjacent ones of the outer flux returns.
18. The loudspeaker of claim 17 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the multiple outer flux returns.
19. The loudspeaker of claim 18 wherein the motor stator further comprises multiple permanent magnets oriented adjacent the multiple outer flux returns.
20. The loudspeaker of claim 15 wherein the at least one outer flux return comprises multiple outer flux returns, the second slots being defined between adjacent ones of the outer flux returns.
21. The loudspeaker of claim 15 or 16 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the at least one inner flux return and the at least one outer flux return.
22. A loudspeaker comprising a diaphragm having an outer perimeter and a central axis defining between them a relatively inner region of the diaphragm extending outwardly from the axis and a relatively outer region of the diaphragm extending inwardly from the outer perimeter, a voice coil, a frame for supporting the diaphragm, and a motor stator providing a magnetic field in which the voice coil is supported, current through the voice coil reciprocating the voice coil and the diaphragm coupled thereto, the means for mounting the voice coil comprising first ribs extending inwardly from the outer region, the first ribs supporting the voice coil between the inner and outer regions, the motor stator including at least one outer flux return providing first slots through which the first ribs extend between the outer region and the voice coil.
23. The loudspeaker of claim 22 wherein the at least one outer flux return comprises multiple outer flux returns, the first slots being defined between adjacent ones of the outer flux returns.
- -
24. The loudspeaker of claim 23 wherein the motor stator further comprises multiple permanent magnets oriented adjacent the multiple outer flux returns.
25. The loudspeaker of claim 22 wherein the motor stator further comprises at least one permanent magnet oriented adjacent the at least one outer flux return.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU68929/98A AU6892998A (en) | 1997-04-15 | 1998-04-07 | Slotted diaphragm loudspeaker |
| DE69825883T DE69825883T2 (en) | 1997-04-15 | 1998-04-07 | SLOTTED SPEAKER MEMBRANE |
| DE0979592T DE979592T1 (en) | 1997-04-15 | 1998-04-07 | SLOTED SPEAKER MEMBRANE |
| CA002283281A CA2283281C (en) | 1997-04-15 | 1998-04-07 | Slotted diaphragm loudspeaker |
| EP98914615A EP0979592B1 (en) | 1997-04-15 | 1998-04-07 | Slotted diaphragm loudspeaker |
| JP54401998A JP3202028B2 (en) | 1997-04-15 | 1998-04-07 | Diaphragm loudspeaker with slot |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/843,384 | 1997-04-15 | ||
| US08/843,384 US5883967A (en) | 1997-04-15 | 1997-04-15 | Slotted diaphragm loudspeaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998047317A1 WO1998047317A1 (en) | 1998-10-22 |
| WO1998047317B1 true WO1998047317B1 (en) | 1998-11-26 |
Family
ID=25289810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1998/007016 WO1998047317A1 (en) | 1997-04-15 | 1998-04-07 | Slotted diaphragm loudspeaker |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US5883967A (en) |
| EP (1) | EP0979592B1 (en) |
| JP (1) | JP3202028B2 (en) |
| AR (1) | AR012413A1 (en) |
| AU (1) | AU6892998A (en) |
| CA (1) | CA2283281C (en) |
| DE (2) | DE69825883T2 (en) |
| WO (1) | WO1998047317A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2766650A1 (en) * | 1997-07-23 | 1999-01-29 | Technofirst | LINEAR SPEAKER |
| JP4081842B2 (en) * | 1998-03-11 | 2008-04-30 | ソニー株式会社 | Speaker device |
| US7185735B2 (en) * | 1998-11-30 | 2007-03-06 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
| US7225895B2 (en) * | 1998-11-30 | 2007-06-05 | Joseph Yaacoub Sahyoun | Audio speaker with wobble free voice coil movement |
| US20040188175A1 (en) * | 1998-11-30 | 2004-09-30 | Sahyoun Joseph Yaacoub | Audio speaker with wobble free voice coil movement |
| KR100339816B1 (en) * | 1999-08-23 | 2002-06-07 | 장세열 | Electric-Acoustic Micro Transducer Having Three-Mode Reproducing Characteristics |
| WO2002011495A2 (en) * | 2000-07-31 | 2002-02-07 | Harman International Industries, Inc. | Loudspeaker coil suspension system |
| JP2002095079A (en) * | 2000-09-12 | 2002-03-29 | Citizen Electronics Co Ltd | Multifunctional sound system |
| JP2003324790A (en) * | 2002-04-30 | 2003-11-14 | Pioneer Electronic Corp | Speaker apparatus |
| US6865282B2 (en) * | 2003-05-01 | 2005-03-08 | Richard L. Weisman | Loudspeaker suspension for achieving very long excursion |
| WO2005099305A1 (en) * | 2004-03-31 | 2005-10-20 | Matsushita Electric Industrial Co., Ltd. | Speaker, module using the same, electronic equipment and device, and speaker producing method |
| US7672472B2 (en) * | 2006-01-03 | 2010-03-02 | Iroquois Holding Co. | Audio transducer |
| US20080166010A1 (en) * | 2007-01-04 | 2008-07-10 | Stiles Enrique M | Overlapping surround roll for loudspeaker |
| US8204269B2 (en) * | 2008-08-08 | 2012-06-19 | Sahyoun Joseph Y | Low profile audio speaker with minimization of voice coil wobble, protection and cooling |
| EP2180721A1 (en) * | 2008-10-21 | 2010-04-28 | Lautsprecher Teufel GmbH | Flat membrane loudspeaker |
| US8290199B2 (en) * | 2009-05-21 | 2012-10-16 | Bose Corporation | Loudspeaker suspension |
| WO2013057726A2 (en) | 2011-10-21 | 2013-04-25 | Praveen Vallabhaneni | Mirror symmetric magnetic circuits transducer and parts |
| GB2500718A (en) * | 2012-03-30 | 2013-10-02 | Paul Raymond Knight | Edge- or circumferentially driven planar loudspeaker with Neodymium magnet system |
| CN202949560U (en) * | 2012-11-16 | 2013-05-22 | 瑞声声学科技(常州)有限公司 | Sounder |
| US9025809B1 (en) | 2014-01-03 | 2015-05-05 | Rockford Corporation | Voicecoil affixation |
| US9008348B1 (en) | 2014-01-03 | 2015-04-14 | Rockford Corporation | Low profile loudspeaker |
| US9466280B2 (en) * | 2014-10-24 | 2016-10-11 | Bose Corporation | Acoustic device suspension |
| GB201907610D0 (en) | 2019-05-29 | 2019-07-10 | Pss Belgium Nv | Loudspeaker |
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-
1997
- 1997-04-15 US US08/843,384 patent/US5883967A/en not_active Expired - Lifetime
-
1998
- 1998-04-07 WO PCT/US1998/007016 patent/WO1998047317A1/en active IP Right Grant
- 1998-04-07 JP JP54401998A patent/JP3202028B2/en not_active Expired - Fee Related
- 1998-04-07 DE DE69825883T patent/DE69825883T2/en not_active Expired - Lifetime
- 1998-04-07 EP EP98914615A patent/EP0979592B1/en not_active Expired - Lifetime
- 1998-04-07 AU AU68929/98A patent/AU6892998A/en not_active Abandoned
- 1998-04-07 CA CA002283281A patent/CA2283281C/en not_active Expired - Fee Related
- 1998-04-07 DE DE0979592T patent/DE979592T1/en active Pending
- 1998-04-14 AR ARP980101699A patent/AR012413A1/en active IP Right Grant
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