EP0067230A1 - Gleitkörper - Google Patents

Gleitkörper Download PDF

Info

Publication number
EP0067230A1
EP0067230A1 EP81903225A EP81903225A EP0067230A1 EP 0067230 A1 EP0067230 A1 EP 0067230A1 EP 81903225 A EP81903225 A EP 81903225A EP 81903225 A EP81903225 A EP 81903225A EP 0067230 A1 EP0067230 A1 EP 0067230A1
Authority
EP
European Patent Office
Prior art keywords
metallic material
sliding member
amorphous metallic
sliding
magnetic tape
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.)
Withdrawn
Application number
EP81903225A
Other languages
English (en)
French (fr)
Other versions
EP0067230A4 (de
Inventor
Shiro Takahashi
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of EP0067230A1 publication Critical patent/EP0067230A1/de
Publication of EP0067230A4 publication Critical patent/EP0067230A4/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • G11B15/61—Guiding record carrier on drum, e.g. drum containing rotating heads
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C45/00—Amorphous alloys
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/60—Guiding record carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]

Definitions

  • the present invention relates to a sliding member and, more particularly, to a sliding member in which a sliding surface is made of an amorphous metallic material.
  • the sliding member of the present invention may be for instance applied to a head drum, a tape guide and the like of a video tape recorder.
  • a sliding member such as a tape guide or a head drum for guiding magnetic tape must have a small coefficient of friction with magnetic tape and an excellent abrasion resistance.
  • Aluminum alloys widely adopted as conventional materials for the sliding members such as a head drum have drawbacks in that they are easy to wear because of their relatively great coefficients of friction and low hardnesses. Therefore, the magnetic tape adheres to the sliding members made of aluminum alloys and may not run smoothly for this reason, or the magnetic tape causes squeaking. These phenomena are notable especially when the magnetic tape is run under the condition of relatively high temperature and humidity.
  • the sliding surface is made of an amorphous metallic material, so that the coefficient of friction with magnetic tape is small; besides the hardness is high, and especially running characteristics of the tape are excellent.
  • any amorphous metallic material may be used in the present invention as long as it satisfies the purpose to be accomplished by the sliding member of the present invention.
  • Examples of such an amorphous metallic material may include those materials which contain transition metal elements such as Fe, Co or Ni or metal elements such as Cr in the atomic ratio of about 60 to 90%, or those materials which contain metalloids such as P, C, B or Si in the atomic ratio of about 40 to 10%.
  • the overall sliding member may be made of an amorphous metallic material.
  • the method for manufacturing only the sliding surface of the sliding member from an amorphous metallic material is not particularly limited; a conventional method may be adopted.
  • an amorphous metallic material is formed into a ribbon of a 20 to 30 p thickness and the ribbon then adheres to the surface of a sliding member main body, which was made of another material to provide a sliding surface.
  • the amorphous metallic material may be easily formed into a ribbon by a rolling rapid cooling apparatus which is disclosed, for example, in Japanese Patent Application No. 52-22936 (Japanese Laid-Open Patent Application No.
  • the amorphous metallic material may be easily formed into a ribbon by the double-roller method, the single-roller method, the liquid rapid cooling method or the like.
  • a sliding member of desired shape may be prepared by the conventional forming.
  • the amorphous metallic materials as described above are easy to work with as compared with ferrite or ceramic and are thus advantageous.
  • the amorphous metallic materials have smaller coefficients of friction and higher hardnesses than those of aluminum, Sendust and ferrite. Furthermore, if the surface roughness is less than about +2 , the amorphous metallic material has an extremely small coefficient of friction. Therefore, the amorphous metallic material provides a surface of an excellent quality without special finish.
  • the amorphous metallic material has magnetization lower than that of ferrite or the like and has electrification lower than that of ceramic.
  • the amorphous metallic material is particularly suitable for a material to make up the sliding surface of the sliding member.
  • a head drum of a video tape recorder shown in Fig. 1 is of three-layered structure including an upper stationary cylinder 1, a lower stationary cylinder 2 and a rotary head cylinder 3.
  • a pair of magnetic heads 4 are mounted on the rotary head cylinder.
  • An amorphous metallic material layer 5 is formed on the tape sliding surface of each cylinder. Referring to Fig. 1, the material layer is formed by having a ribbon of an amorphous metallic material adhere to that part of the main body which will become the tape sliding surface.
  • a lead 6 for guiding magnetic tape is mounted on the lower stationary cylinder 2
  • this lead may be formed by having the other amorphous metallic material layer 7 adhere to the outer surface of the amorphous metallic material layer 5 so that the upper end of the layer 7 may serve as a lead.
  • the amorphous metallic material is made into a ribbon whose shape has a lead
  • another method to form a lead may be offered by having such ribbon adhere to the main body of the sliding member.
  • a step corresponding to the lead is formed on a cooling roller for rapidly cooling a melted amorphous metallic material, and the amorphous metallic material is rapidly cooled thereon.
  • the amorphous metallic material layer may be formed on that part of the member which will be brought into sliding contact with magnetic tape and need not therefore be formed on the entire surfaces of the cylinders. If the sliding part or part of the sliding member alone is made of an amorphous metallic material, the rest of the member may be made of a conventional material such as a hard plastic or an aluminum alloy.
  • Fig. 2 shows an AC head (audio/control head) of a video tape recorder to which a sliding member of the present invention is applied.
  • Magnetic heads 10 and 11 for recording audio and control signals respectively are mounted on the upper and lower side edges of the AC head.
  • An amorphous metallic material layer 12 adheres to the sliding part between the magnetic heads.
  • Fig. 3 shows a guide pin to which a sliding member of the present invention is applied.
  • an amorphous metallic material layer 15 adheres to the tape sliding surface.
  • the coefficient of friction between the sliding surface and magnetic tape is small and the sliding surface has a high hardness. Therefore, adhesion of the magnetic tape to the sliding member may be prevented and excellent running characteristics of the magnetic tape may be guaranteed.
  • the amorphous metallic material is easy to work with and is effective to lower the manufacturing cost of the member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Magnetic Heads (AREA)
EP19810903225 1980-12-05 1981-12-04 Gleitkörper. Withdrawn EP0067230A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP174654/80U 1980-12-05
JP1980174654U JPS606907Y2 (ja) 1980-12-05 1980-12-05 摺動部材

Publications (2)

Publication Number Publication Date
EP0067230A1 true EP0067230A1 (de) 1982-12-22
EP0067230A4 EP0067230A4 (de) 1983-08-03

Family

ID=15982363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810903225 Withdrawn EP0067230A4 (de) 1980-12-05 1981-12-04 Gleitkörper.

Country Status (5)

Country Link
US (1) US4523245A (de)
EP (1) EP0067230A4 (de)
JP (1) JPS606907Y2 (de)
NL (1) NL8120452A (de)
WO (1) WO1982001896A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108869A1 (de) * 2009-03-21 2010-09-30 Schaeffler Technologies Gmbh & Co. Kg Metallenes bauteil, insbesondere wälzlager-, motoren- oder getriebebauteil

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4555186A (en) * 1984-02-10 1985-11-26 Dresser Industries, Inc. Amorphous alloy plain bearings
US6015627A (en) * 1990-08-03 2000-01-18 Sony Corporation Magnetic head drum and method of manufacturing same
US5321681A (en) * 1990-11-21 1994-06-14 Image Premastering Services, Ltd. Apparatus for recording, storing and electronically accessing images

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605615A1 (de) * 1975-02-15 1976-09-02 Tdk Electronics Co Ltd Magnetkopf
GB2011149A (en) * 1977-12-20 1979-07-04 Bogen W Magnetic heads

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3871836A (en) * 1972-12-20 1975-03-18 Allied Chem Cutting blades made of or coated with an amorphous metal
US3940293A (en) * 1972-12-20 1976-02-24 Allied Chemical Corporation Method of producing amorphous cutting blades
US4038073A (en) * 1976-03-01 1977-07-26 Allied Chemical Corporation Near-zero magnetostrictive glassy metal alloys with high saturation induction
JPS59582B2 (ja) * 1976-03-23 1984-01-07 東北大学金属材料研究所長 磁歪が小さく耐摩耗性の大きい磁気ヘツド用非晶質合金およびその製造方法
JPS5325409A (en) * 1976-08-20 1978-03-09 Sony Corp Magnetic head
US4152144A (en) * 1976-12-29 1979-05-01 Allied Chemical Corporation Metallic glasses having a combination of high permeability, low magnetostriction, low ac core loss and high thermal stability
JPS5393807A (en) * 1977-01-28 1978-08-17 Hitachi Ltd Guide drum for magnetic tape
JPS6037179B2 (ja) * 1977-02-24 1985-08-24 ティーディーケイ株式会社 非晶質磁性合金
JPS6035420B2 (ja) * 1977-02-18 1985-08-14 ティーディーケイ株式会社 熱的に安定な非晶質磁性合金
DE2722509C2 (de) * 1977-05-18 1987-05-14 Basf Ag, 6700 Ludwigshafen Bandführungseinrichtung für schnellaufende Magnetbandgeräte
JPS5420918A (en) * 1977-07-16 1979-02-16 Allied Chem Amorphous alloy with improved brittle resistance at heat treating
JPS54138411A (en) * 1978-04-19 1979-10-26 Matsushita Electric Ind Co Ltd Magnetic recorder-reproducer
SU830553A1 (ru) * 1979-07-10 1981-05-15 Вильнюсское Отделение Всесоюзногонаучно-Исследовательскогопроектно-Конструкторского Итехнологического Института Малыхэлектрических Машин Устройство дл направлени магнитнойлЕНТы
JPS5644752A (en) * 1979-09-21 1981-04-24 Hitachi Ltd Ferromagnetic amorphous alloy
JPS56156917A (en) * 1980-05-06 1981-12-03 Matsushita Electric Ind Co Ltd Magnetic head
JPS5754251A (en) * 1980-09-15 1982-03-31 Tdk Corp Amorphous magnetic alloy material
JPS5789450A (en) * 1980-11-21 1982-06-03 Matsushita Electric Ind Co Ltd Amorphous magnetic alloy
JP3261715B2 (ja) * 1991-12-24 2002-03-04 日本電気株式会社 入出力データ転送処理装置
JP2924459B2 (ja) * 1992-06-16 1999-07-26 富士電機株式会社 リードフレームの予備半田付け方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2605615A1 (de) * 1975-02-15 1976-09-02 Tdk Electronics Co Ltd Magnetkopf
GB2011149A (en) * 1977-12-20 1979-07-04 Bogen W Magnetic heads

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO8201896A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108869A1 (de) * 2009-03-21 2010-09-30 Schaeffler Technologies Gmbh & Co. Kg Metallenes bauteil, insbesondere wälzlager-, motoren- oder getriebebauteil

Also Published As

Publication number Publication date
JPS5798566U (de) 1982-06-17
WO1982001896A1 (en) 1982-06-10
JPS606907Y2 (ja) 1985-03-07
NL8120452A (nl) 1982-11-01
EP0067230A4 (de) 1983-08-03
US4523245A (en) 1985-06-11

Similar Documents

Publication Publication Date Title
US4361860A (en) Magnetic transducer head and method of manufacturing the same
US4629660A (en) Perpendicular magnetic-recording medium
EP0538823B1 (de) Magnetaufzeichnungs- und Wiedergabesystem
US4731683A (en) Magnetic recording and reproducing system with composite magnetic head
EP0067230A1 (de) Gleitkörper
EP0208471A2 (de) Magnetische Übertragungsmethode
US4602307A (en) Compound type magnetic head
Ozawa et al. Friction and wear of magnetic heads and amorphous metal sliding against magnetic tapes
EP0176131B1 (de) Magnetkopf
Tanaka et al. Wear of magnetic materials and audio heads sliding against magnetic tapes
DE69414465T2 (de) Magnetkopf
EP0438177A2 (de) Magnetische Aufzeichnungsplatte
US5158833A (en) Magnetic recording medium
JPS61194609A (ja) 複合磁気ヘツド
EP0483785B1 (de) Verfahren zur magnetischen Aufnahme und/oder Wiedergabe und Magnetkopf zur Durchführung der Methode
JPS58102308A (ja) 磁気記録再生装置
US4960498A (en) Method of manufacturing a magnetic head
JP3213997B2 (ja) 磁気ヘッド
JPH0128491B2 (de)
JPS6364608A (ja) 磁気ヘツド
JPH0319119A (ja) 浮動型磁気ヘッド
JPS62140225A (ja) 浮上型磁気ヘツド
JPH0258715A (ja) 磁気ヘッド
JPS62109219A (ja) 磁気記録媒体
JPH0696410A (ja) 磁気ヘッド用シールド板スペーサ

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): FR

17P Request for examination filed

Effective date: 19821203

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850920

RIN1 Information on inventor provided before grant (corrected)

Inventor name: TAKAHASHI, SHIRO