JPS641462A - Voice coil motor for magnetic disk device - Google Patents

Voice coil motor for magnetic disk device

Info

Publication number
JPS641462A
JPS641462A JP15449087A JP15449087A JPS641462A JP S641462 A JPS641462 A JP S641462A JP 15449087 A JP15449087 A JP 15449087A JP 15449087 A JP15449087 A JP 15449087A JP S641462 A JPS641462 A JP S641462A
Authority
JP
Japan
Prior art keywords
coil
magnetic
voice coil
coil motor
magnetic disk
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
JP15449087A
Other languages
Japanese (ja)
Other versions
JPH011462A (en
Inventor
Masami Suzuki
Tokuki Une
Michihiro Nakanishi
Tomio Suzuki
Hiroshi Nishida
Kazuo Nakakoshi
Atsushi Naruse
Takeshi Takahashi
Masatoshi Horinouchi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15449087A priority Critical patent/JPS641462A/en
Publication of JPH011462A publication Critical patent/JPH011462A/en
Publication of JPS641462A publication Critical patent/JPS641462A/en
Pending legal-status Critical Current

Links

Landscapes

  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Moving Of Heads (AREA)

Abstract

PURPOSE: To hasten the response without regard to the position of a voice coil, by providing a high-conductive member to allow the line of magnetic force generated at the inserted position and projected position to go through at about the same quantity.
CONSTITUTION: A voice coil motor is composed of a magnetic circuit 11 and a coil 15. The magnetic circuit 11 has a cylindrical magnetic substance 12 and a permanent magnet 13, among which magnetic gap 14 is formed. The coil 15 is of a long coil type set up to the magnetic gap 14. A copper ring 16 as a high-conductive member is provided to the external and internal edges of the permanent magnet 13 of the magnetic circuit 11. This copper ring 16 is arranged so that the most part of the line of magnetic force generated when the coil 15 is deepestly inserted to the magnetic substance 12 and generated when the coil 15 is most projected may go through in almost equal amount. High response can thereby be obtained regardless of which position the coil is arranged.
COPYRIGHT: (C)1989,JPO&Japio
JP15449087A 1987-06-23 1987-06-23 Voice coil motor for magnetic disk device Pending JPS641462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15449087A JPS641462A (en) 1987-06-23 1987-06-23 Voice coil motor for magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15449087A JPS641462A (en) 1987-06-23 1987-06-23 Voice coil motor for magnetic disk device

Publications (2)

Publication Number Publication Date
JPH011462A JPH011462A (en) 1989-01-05
JPS641462A true JPS641462A (en) 1989-01-05

Family

ID=15585384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15449087A Pending JPS641462A (en) 1987-06-23 1987-06-23 Voice coil motor for magnetic disk device

Country Status (1)

Country Link
JP (1) JPS641462A (en)

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