JPS5567975A - Head positioning unit - Google Patents

Head positioning unit

Info

Publication number
JPS5567975A
JPS5567975A JP13940978A JP13940978A JPS5567975A JP S5567975 A JPS5567975 A JP S5567975A JP 13940978 A JP13940978 A JP 13940978A JP 13940978 A JP13940978 A JP 13940978A JP S5567975 A JPS5567975 A JP S5567975A
Authority
JP
Japan
Prior art keywords
flat
yokes
coil
nearly
magnets
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.)
Granted
Application number
JP13940978A
Other languages
Japanese (ja)
Other versions
JPS5831662B2 (en
Inventor
Reizo Kaneko
Koji Otani
Koichi Seki
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.)
Tokin Corp
NTT Inc
Original Assignee
Nippon Telegraph and Telephone Corp
Tohoku Metal Industries 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 Nippon Telegraph and Telephone Corp, Tohoku Metal Industries Ltd filed Critical Nippon Telegraph and Telephone Corp
Priority to JP13940978A priority Critical patent/JPS5831662B2/en
Publication of JPS5567975A publication Critical patent/JPS5567975A/en
Publication of JPS5831662B2 publication Critical patent/JPS5831662B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Moving Of Heads (AREA)

Abstract

PURPOSE: To realize a miniature and lightweight device and also to eliminate nearly leakage of magnetic flux by arranging four flat fan-shaped magnets on opposite surfaces of a couple of flat yokes.
CONSTITUTION: In inside surfaces of a couple of upper and lower support boards 23 and 24 combined in one by support 22, shallow grooves 27 at centers of mutually-opposing surfaces nearly in a fan shape and constituting a magnetic circuit part are formed and flat yokes 25 and 26 with four flat magnets 28aW29b nearly in a fan shape and fitted at both ends are arranged opposing each other. Further, flat moving coil 20 of narrow coil width fixed to axis 2 through coil frame 21 is inserted among magnets 28aW29b so that winding parts 20a and 20b crossing its sliding direction will be positioned at magnet gap parts 30a and 30b. Consequently, flowing a current through coil 20 forms a magnetic circuit of yokes 25 and 26 at the shortest distance, so that yokes 25 and 26 can be miniaturized and the leakage of magnetic flux can also be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP13940978A 1978-11-14 1978-11-14 Head positioning device Expired JPS5831662B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13940978A JPS5831662B2 (en) 1978-11-14 1978-11-14 Head positioning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13940978A JPS5831662B2 (en) 1978-11-14 1978-11-14 Head positioning device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP25926184A Division JPS6168779A (en) 1984-12-10 1984-12-10 Head positioning device

Publications (2)

Publication Number Publication Date
JPS5567975A true JPS5567975A (en) 1980-05-22
JPS5831662B2 JPS5831662B2 (en) 1983-07-07

Family

ID=15244566

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13940978A Expired JPS5831662B2 (en) 1978-11-14 1978-11-14 Head positioning device

Country Status (1)

Country Link
JP (1) JPS5831662B2 (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103171A (en) * 1980-12-18 1982-06-26 Fujitsu Ltd Actuator for magnetic recorder
JPS5823362A (en) * 1981-07-30 1983-02-12 Nippon Telegr & Teleph Corp <Ntt> Shaking actuator
JPS58501931A (en) * 1981-11-12 1983-11-10 レスニコ−，ハ−バ−ト control electric drive
JPS5975780U (en) * 1982-11-10 1984-05-23 日立金属株式会社 electromagnetic drive device
JPS59138386U (en) * 1983-03-04 1984-09-14 富士通株式会社 voice coil motor
JPS60159567U (en) * 1984-03-30 1985-10-23 住友特殊金属株式会社 Head positioning device
JPS6155258U (en) * 1984-07-03 1986-04-14
US4620252A (en) * 1981-05-01 1986-10-28 Iomega Corporation Symmetrical coil actuator for a magnetic disk drive
US4805055A (en) * 1986-11-24 1989-02-14 Maxtor Winchester disc drive actuator structure
US5148071A (en) * 1990-03-22 1992-09-15 Hitachi Metals, Ltd. Swing-type actuator with thin reinforced movable coil
US5165090A (en) * 1990-05-24 1992-11-17 Hitachi Metals, Ltd. Swing-type actuator
US5168184A (en) * 1990-10-04 1992-12-01 Hitachi Metals, Ltd. Swing-type actuator
US5168185A (en) * 1990-10-09 1992-12-01 Hitachi Metals, Ltd. Swing-type actuator
US5382851A (en) * 1994-05-04 1995-01-17 Xolox Corporation Swing-type actuator
US5459359A (en) * 1992-04-30 1995-10-17 Hitachi Metals, Ltd. Swing-type actuator
US5576583A (en) * 1992-04-30 1996-11-19 Hitachi Metals, Ltd. Swing-type actuator
US5581422A (en) * 1993-02-09 1996-12-03 Hitachi Metals, Ltd. Actuator with moveable coil and recording apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57103171A (en) * 1980-12-18 1982-06-26 Fujitsu Ltd Actuator for magnetic recorder
US4620252A (en) * 1981-05-01 1986-10-28 Iomega Corporation Symmetrical coil actuator for a magnetic disk drive
JPS5823362A (en) * 1981-07-30 1983-02-12 Nippon Telegr & Teleph Corp <Ntt> Shaking actuator
JPS58501931A (en) * 1981-11-12 1983-11-10 レスニコ−，ハ−バ−ト control electric drive
JPS5975780U (en) * 1982-11-10 1984-05-23 日立金属株式会社 electromagnetic drive device
JPS59138386U (en) * 1983-03-04 1984-09-14 富士通株式会社 voice coil motor
JPS60159567U (en) * 1984-03-30 1985-10-23 住友特殊金属株式会社 Head positioning device
JPS6155258U (en) * 1984-07-03 1986-04-14
US4805055A (en) * 1986-11-24 1989-02-14 Maxtor Winchester disc drive actuator structure
US5148071A (en) * 1990-03-22 1992-09-15 Hitachi Metals, Ltd. Swing-type actuator with thin reinforced movable coil
US5165090A (en) * 1990-05-24 1992-11-17 Hitachi Metals, Ltd. Swing-type actuator
US5168184A (en) * 1990-10-04 1992-12-01 Hitachi Metals, Ltd. Swing-type actuator
US5168185A (en) * 1990-10-09 1992-12-01 Hitachi Metals, Ltd. Swing-type actuator
US5459359A (en) * 1992-04-30 1995-10-17 Hitachi Metals, Ltd. Swing-type actuator
US5576583A (en) * 1992-04-30 1996-11-19 Hitachi Metals, Ltd. Swing-type actuator
US5581422A (en) * 1993-02-09 1996-12-03 Hitachi Metals, Ltd. Actuator with moveable coil and recording apparatus
US5382851A (en) * 1994-05-04 1995-01-17 Xolox Corporation Swing-type actuator
US5656877A (en) * 1994-05-04 1997-08-12 Xolox Corporation Swing-type actuator and method of making same

Also Published As

Publication number Publication date
JPS5831662B2 (en) 1983-07-07

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