EP0067230A1 - Gleitkörper - Google Patents
Gleitkörper Download PDFInfo
- 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- Withdrawn
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)
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)
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)
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)
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)
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 |
-
1980
- 1980-12-05 JP JP1980174654U patent/JPS606907Y2/ja not_active Expired
-
1981
- 1981-12-04 WO PCT/JP1981/000366 patent/WO1982001896A1/ja not_active Application Discontinuation
- 1981-12-04 US US06/414,334 patent/US4523245A/en not_active Expired - Fee Related
- 1981-12-04 NL NL8120452A patent/NL8120452A/nl not_active Application Discontinuation
- 1981-12-04 EP EP19810903225 patent/EP0067230A4/de not_active Withdrawn
Patent Citations (2)
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)
Title |
---|
See also references of WO8201896A1 * |
Cited By (1)
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 |
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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 |