JPS568997A - Loudspeaker - Google Patents
LoudspeakerInfo
- Publication number
- JPS568997A JPS568997A JP8528779A JP8528779A JPS568997A JP S568997 A JPS568997 A JP S568997A JP 8528779 A JP8528779 A JP 8528779A JP 8528779 A JP8528779 A JP 8528779A JP S568997 A JPS568997 A JP S568997A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- adhesives
- diaphragm
- bonded
- cylinder
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
- H04R9/04—Construction, mounting, or centering of coil
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Abstract
PURPOSE:To improve the efficiency of a coil with the occupation area of the coil reduced by using a voice coil obtained by winding a well-conductive strand with its surface insulated in a cylindrical body and by excluding the bobbin of the coil by an insulator cylinder whose diameter is close to that of the coil. CONSTITUTION:A strand of thin copper or aluminum foil, after being applied with a heat-proof insulating coating on its surface, is wound in a coil shape to form voice coil body 31, whose wind-starting and ending conductive parts 32 and 33 are elongated to form a cylindrical space. Into this cylindrical space, hard and lightweight insulator cylinder 34 with a little acoustic tranmission loss is inserted and concatenated and hardly stuck in a body by adhesives. To the tip part of this cylinder 34, diaphragm 36 is bonded by adhesives and near this bonding part, corrugated damper 37 is bonded, so that coil body 31 will be held axially slidable. Then, the occupation area of coil body 31 is reduced and acoustic energy of high efficiency is supplied to diaphragm 36.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8528779A JPS568997A (en) | 1979-07-05 | 1979-07-05 | Loudspeaker |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8528779A JPS568997A (en) | 1979-07-05 | 1979-07-05 | Loudspeaker |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS568997A true JPS568997A (en) | 1981-01-29 |
Family
ID=13854346
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8528779A Pending JPS568997A (en) | 1979-07-05 | 1979-07-05 | Loudspeaker |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS568997A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062140A (en) * | 1988-04-27 | 1991-10-29 | Sony Corporation | Induction speaker |
US5197104A (en) * | 1991-04-18 | 1993-03-23 | Josef Lakatos | Electrodynamic loudspeaker with electromagnetic impedance sensor coil |
WO1994016536A1 (en) * | 1993-01-06 | 1994-07-21 | Velodyne Acoustics, Inc. | Speaker containing dual coil |
JPH06237500A (en) * | 1993-11-16 | 1994-08-23 | Sony Corp | Electroacoustic transducer |
-
1979
- 1979-07-05 JP JP8528779A patent/JPS568997A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5062140A (en) * | 1988-04-27 | 1991-10-29 | Sony Corporation | Induction speaker |
US5197104A (en) * | 1991-04-18 | 1993-03-23 | Josef Lakatos | Electrodynamic loudspeaker with electromagnetic impedance sensor coil |
WO1994016536A1 (en) * | 1993-01-06 | 1994-07-21 | Velodyne Acoustics, Inc. | Speaker containing dual coil |
US5832096A (en) * | 1993-01-06 | 1998-11-03 | Velodyne Acoustics, Inc. | Speaker containing dual coil |
JPH06237500A (en) * | 1993-11-16 | 1994-08-23 | Sony Corp | Electroacoustic transducer |
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