JPS6449500A - Magnetic circuit - Google Patents

Magnetic circuit

Info

Publication number
JPS6449500A
JPS6449500A JP20711287A JP20711287A JPS6449500A JP S6449500 A JPS6449500 A JP S6449500A JP 20711287 A JP20711287 A JP 20711287A JP 20711287 A JP20711287 A JP 20711287A JP S6449500 A JPS6449500 A JP S6449500A
Authority
JP
Japan
Prior art keywords
magnet
pole piece
magnetic circuit
coil
peripheral surface
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
Application number
JP20711287A
Other languages
Japanese (ja)
Inventor
Jiro Nakaso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan Ltd
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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP20711287A priority Critical patent/JPS6449500A/en
Publication of JPS6449500A publication Critical patent/JPS6449500A/en
Pending legal-status Critical Current

Links

Landscapes

  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:To form a magnetic circuit which is small-sized and whose stroke is long by using a cylinder-shaped magnet having a radial anisotropy to function as the counter electrode of a pole piece. CONSTITUTION:A cylinder-shaped magnet 11 having the radial anisotropy is provided concentrically with a pole piece 10. Between the peripheral surface of the magnet 11 and the peripheral surface of the pole piece 10, a magnetic gap 13 in which a voice coil 12 is interposed is formed. Consequently, the mag net 11 functions as the counter electrode to the pole piece 10. Thus, as the length of the magnet 11 is made long, the stroke to linear-drive a coil bobbin 14 to wind a coil 12 can be made long. Since the magnet 11 can be formed to be thin, the maximum outer diameter of the magnetic circuit can be made small.
JP20711287A 1987-08-20 1987-08-20 Magnetic circuit Pending JPS6449500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20711287A JPS6449500A (en) 1987-08-20 1987-08-20 Magnetic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20711287A JPS6449500A (en) 1987-08-20 1987-08-20 Magnetic circuit

Publications (1)

Publication Number Publication Date
JPS6449500A true JPS6449500A (en) 1989-02-23

Family

ID=16534396

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20711287A Pending JPS6449500A (en) 1987-08-20 1987-08-20 Magnetic circuit

Country Status (1)

Country Link
JP (1) JPS6449500A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0598391A2 (en) * 1992-11-18 1994-05-25 Matsushita Electric Industrial Co., Ltd. Speaker apparatus and television receiver using the same
EP0616751A1 (en) * 1991-08-05 1994-09-28 Aura Systems, Inc. Voice coil actuator
AU672953B2 (en) * 1991-08-05 1996-10-24 Speaker Acquisition Sub Voice coil actuator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0616751A1 (en) * 1991-08-05 1994-09-28 Aura Systems, Inc. Voice coil actuator
EP0616751A4 (en) * 1991-08-05 1995-05-17 Aura Systems Inc Voice coil actuator.
AU672953B2 (en) * 1991-08-05 1996-10-24 Speaker Acquisition Sub Voice coil actuator
EP0598391A2 (en) * 1992-11-18 1994-05-25 Matsushita Electric Industrial Co., Ltd. Speaker apparatus and television receiver using the same
EP0598391A3 (en) * 1992-11-18 1995-03-08 Matsushita Electric Ind Co Ltd Speaker apparatus and television receiver using the same.
US5455867A (en) * 1992-11-18 1995-10-03 Matsushita Electric Industrial Co., Ltd. Speaker apparatus and television receiver using the same
EP0748116A1 (en) * 1992-11-18 1996-12-11 Matsushita Electric Industrial Co., Ltd. Speaker apparatus of a television receiver

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