JPS6040551A - Vtr cylinder - Google Patents
Vtr cylinderInfo
- Publication number
- JPS6040551A JPS6040551A JP14879083A JP14879083A JPS6040551A JP S6040551 A JPS6040551 A JP S6040551A JP 14879083 A JP14879083 A JP 14879083A JP 14879083 A JP14879083 A JP 14879083A JP S6040551 A JPS6040551 A JP S6040551A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- resin
- vtr
- tape
- coefficient
- 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
Links
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
Abstract
Description
【発明の詳細な説明】 本発明は、ＶＴＲ用シリンダに関するものである。[Detailed description of the invention] The present invention relates to a cylinder for a VTR.
従来のＶＴＲ用シリンダは、アルミニウム合金の鋳造材
か、または、冷間鍛造材で製作したものであり、摩擦係
数が０．４〜０．５位あって比較的に高いため、ＶＴＲ
用テープが損傷し易く、再生画像に悪影響をおよぼり欠
点がある。また、アルミニウム合金の鋳造材においては
、シリンダの表面に鋳造欠陥が発生し、この欠陥がＶＴ
Ｒ用テープの走行を不安定とする欠点がある仙、冷間鍛
造材のものは、コストが高くつく欠点があった。Conventional cylinders for VTRs are made of cast aluminum alloy or cold forged materials, and have a relatively high friction coefficient of about 0.4 to 0.5.
The disadvantage is that the tape is easily damaged, which adversely affects the reproduced image. In addition, in cast aluminum alloy materials, casting defects occur on the surface of the cylinder, and these defects
Those made of cold forged material had the disadvantage of making the running of the R tape unstable, and had the disadvantage of being expensive.
本発明は、上記のような欠点を解消したもので、テープ
走行面が低摩擦で欠陥がなく、製作容易でコスト低減が
できるＶＴＲ用シリンダの提供を、目的とするものであ
る。The present invention eliminates the above-mentioned drawbacks, and aims to provide a cylinder for a VTR that has a tape running surface with low friction and no defects, is easy to manufacture, and can be manufactured at a reduced cost.
本発明の構成は、シリンダ本体を熱膨張係数２Ｘ１０−
”／℃〜２．５ｘ１０−５／℃の樹脂で形成し、該シリ
ンダ本体のテープ走行面を摩擦係数０．１５〜０．２５
の樹脂で形成したＶＴＲ用シリンダにある。The structure of the present invention has a cylinder body with a thermal expansion coefficient of 2X10-
The tape running surface of the cylinder body has a friction coefficient of 0.15 to 0.25.
This is a VTR cylinder made of resin.
以下、本発明の実施例を、図面に基づいて説明する。Embodiments of the present invention will be described below based on the drawings.
第１図は、一実施例に係るＶＴＲ用シリンダの斜視図、
第２図は、その縦断正面図である。FIG. 1 is a perspective view of a VTR cylinder according to an embodiment;
FIG. 2 is a longitudinal sectional front view thereof.
同図で、１はシリンダ本体、２は、シリンダ本体１のテ
ープ走行面、３は、テープの走行が外れないＪ、うに段
差を形成したリード部である。In the figure, 1 is a cylinder main body, 2 is a tape running surface of the cylinder main body 1, and 3 is a lead portion with a step formed thereon so that the tape does not run off.
このシリンダ本体１の外周部Ａは、カーボンを交ぜた摩
１察係数０．１５〜０．２５の四弗化樹脂で形成し、こ
の外周部Δ以外のシリンダ本体１は、カーボンを交ぜた
熱膨張係数の２Ｘ１０−５／’Ｃ〜２．５Ｘ１０−５
／℃の一般樹脂、フェノール系樹脂で形成したものであ
る。The outer peripheral part A of the cylinder body 1 is made of a tetrafluoride resin mixed with carbon and has a friction coefficient of 0.15 to 0.25. Expansion coefficient 2X10-5/'C ~ 2.5X10-5
/℃ made of general resin or phenolic resin.
上Ｒ＋！ １４成になるＶＴＲ用シリンダを製作づるに
は、シリンダ本体１の外周部Ａを形成するために、カー
ボンを交ぜた摩擦係数０．１５〜０．２５の四弗化樹脂
製リングを射出成形機の金型に設（Ｊ、この外周部Ａ以
外のシリンダ本体１を、カーボンを交ぜた熱膨張係数の
２Ｘ１０−５／℃〜２．５Ｘ１０−５／℃の樹脂で射出
成形ににつで形成する。そして成形されたシリンダ本体
１のテープ走行面２およびリード部３を加工して形成し
、しかる後、テープ走行面２のあらさを２１ｔｍ以下に
研磨するものである。Upper R+! To manufacture a VTR cylinder with 14 components, a ring made of tetrafluoride resin mixed with carbon and having a friction coefficient of 0.15 to 0.25 is molded using an injection molding machine to form the outer circumference A of the cylinder body 1. (J) The cylinder body 1 other than the outer peripheral part A is formed by injection molding with a resin mixed with carbon and having a coefficient of thermal expansion of 2X10-5/℃ to 2.5X10-5/℃. Then, the tape running surface 2 and lead portion 3 of the molded cylinder body 1 are processed and formed, and then the tape running surface 2 is polished to a roughness of 21 tm or less.
上記によって得られたＶ Ｔ Ｒ用シリンダのテープ走
行面の摩擦係数は、０．１５〜０．２５であり、アルミ
ニウム合金の鋳造材または冷間鍛造材のものより低い。The coefficient of friction of the tape running surface of the VTR cylinder obtained above is 0.15 to 0.25, which is lower than that of cast or cold forged aluminum alloy materials.
以上説明したように、本実施例に係るＶ Ｔ Ｒｆｎシ
リンダは、テープの走行面がカーボンを添加した摩擦係
数０．１５〜０．２５の四弗化樹脂で形成するので、テ
ープの損傷を軽減することができ、かつ、テープの摩擦
によって生ずる静電気の帯電を防止することができる。As explained above, in the V T Rfn cylinder according to this embodiment, the running surface of the tape is made of carbon-added tetrafluoride resin with a friction coefficient of 0.15 to 0.25, which reduces damage to the tape. It is also possible to prevent electrostatic charging caused by friction of the tape.
ぞして、その他のシリンダ本体をカーボンを添加した一
般樹脂で射出成形によって形成するので、製作が容易で
あり、また、樹脂製であるから表面欠陥の発生がなく、
加工性も良い。Since the other cylinder body is formed by injection molding from a general resin containing carbon, it is easy to manufacture, and since it is made of resin, there are no surface defects.
Good workability.
以上述べたＪ：うに、本発明は、総合して、テープ走行
面が低摩擦で欠陥がなく、製作容易で、＋＋ｎＴ性がよ
く、コストを低減できるものであって、実用的効果に優
れた発明ということができる。As stated above, the present invention has a tape running surface with low friction and no defects, is easy to manufacture, has good ++nT properties, can reduce costs, and has excellent practical effects. It can be called an invention.
第１図は、本発明の一実施例に係るＶＴＲ用シリンダの
斜視図、第２図は、その縦断ｉＥ面図である。
１・・・シリンダ本体、２・・・テープ走行面、３・・
・１）−ド部。
１４訂出願人
日 立 金 属 株式会２１
代理人
５−
第１図FIG. 1 is a perspective view of a VTR cylinder according to an embodiment of the present invention, and FIG. 2 is a vertical sectional view thereof. 1... Cylinder body, 2... Tape running surface, 3...
・1)-do part. 14th Edition Applicant: Hitachi Metals, Ltd. 21 Agent 5 - Figure 1
Claims (2)
．５ｘｌＯ−” ／℃の樹脂で形成し、該シリンダ本体
のテープ走行面を摩擦係数０．１５〜０．２５の樹脂で
形成したことを特徴とするＶＴＲ用シリンダ。 （−(1) The cylinder body has a thermal expansion coefficient of 2X10-5/℃~2
．． A cylinder for a VTR, characterized in that it is made of a resin with a friction coefficient of 5xlO-"/°C, and the tape running surface of the cylinder body is made of a resin with a friction coefficient of 0.15 to 0.25. (-
がリング状に形成されたものであることを特徴とする特
許請求の範囲第１項記載のＶＴＲ用シリンダ。(2) A cylinder for a VTR according to claim 1, characterized in that the resin having a friction coefficient of 0.15 to 0.25 according to LIu is formed into a ring shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14879083A JPS6040551A (en) | 1983-08-16 | 1983-08-16 | Vtr cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14879083A JPS6040551A (en) | 1983-08-16 | 1983-08-16 | Vtr cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6040551A true JPS6040551A (en) | 1985-03-02 |
Family
ID=15460745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14879083A Pending JPS6040551A (en) | 1983-08-16 | 1983-08-16 | Vtr cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6040551A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193548U (en) * | 1985-05-21 | 1986-12-02 | ||
| JPS61193547U (en) * | 1985-05-21 | 1986-12-02 | ||
| JPS6252755A (en) * | 1985-08-30 | 1987-03-07 | Mitsubishi Electric Corp | Rotary head assembly for magnetic recording and reproducing device |
| JPS62231084A (en) * | 1986-03-28 | 1987-10-09 | 東レ株式会社 | Fiber structure |
| JPS6366379A (en) * | 1986-09-09 | 1988-03-25 | 帝人株式会社 | Production of sewing yarn |
-
1983
- 1983-08-16 JP JP14879083A patent/JPS6040551A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61193548U (en) * | 1985-05-21 | 1986-12-02 | ||
| JPS61193547U (en) * | 1985-05-21 | 1986-12-02 | ||
| JPS6252755A (en) * | 1985-08-30 | 1987-03-07 | Mitsubishi Electric Corp | Rotary head assembly for magnetic recording and reproducing device |
| JPS62231084A (en) * | 1986-03-28 | 1987-10-09 | 東レ株式会社 | Fiber structure |
| JPS6366379A (en) * | 1986-09-09 | 1988-03-25 | 帝人株式会社 | Production of sewing yarn |
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