JP2003007030A - Reel for recording media tape - Google Patents
Reel for recording media tapeInfo
- Publication number
- JP2003007030A JP2003007030A JP2001186798A JP2001186798A JP2003007030A JP 2003007030 A JP2003007030 A JP 2003007030A JP 2001186798 A JP2001186798 A JP 2001186798A JP 2001186798 A JP2001186798 A JP 2001186798A JP 2003007030 A JP2003007030 A JP 2003007030A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- hub
- reel
- flange
- resin material
- 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
Links
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 239000000463 material Substances 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 abstract description 13
- 238000004804 winding Methods 0.000 abstract description 4
- 229920005668 polycarbonate resin Polymers 0.000 description 7
- 239000004431 polycarbonate resin Substances 0.000 description 7
- 239000003365 glass fiber Substances 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、外周面にテープを
巻回する円筒状のハブの端部に円盤状のフランジを溶着
してなる記録メディアテープ用リールに関するものであ
る。
【０００２】
【従来の技術】コンピュータ等の外部記憶装置等の記録
再生装置に用いられる記録メディアの一種として磁気テ
ープ等の記録メディアテープがあり、この記録メディア
テープはリールに巻装されてカートリッジケースに収容
された１リールや２リールタイプの記録メディアカート
リッジが提供され、記録再生装置に装填されてリールの
回転に伴って記録メディアテープが走行され、その記録
面に記録再生が行われる。
【０００３】例えば、外部記憶用磁気テープにおいて
は、最近、１巻あたりに記録できる容量も数十ＧＢから
数百ＧＢに及び、高容量化されている。この高容量を実
現するため、トラックピッチ幅を狭くしたり、テープ厚
みを薄くして収納テープ量を長くしたり、サーボ信号を
書き込んだりしている。これに伴い、ドライブ装置のテ
ープ走行機構、カートリッジ構造にも高精度が要求さ
れ、特に記録メディアテープが巻かれるリールの形状精
度、強度が必要とされる。
【０００４】上記リールは、外周面にテープを巻回する
円筒状のハブと、このハブの両端から円盤状に延びて巻
装されたテープの両側面に位置するフランジとで構成さ
れている。一般に、このリールを樹脂成形品で構成する
場合には、一方のフランジとハブとを一体に成形し、こ
のハブの端部に別途に成形した他方のフランジを固着し
ている。
【０００５】上記ハブとフランジの固着は、通常、超音
波溶着によって行っている。この超音波溶着は、加工時
間が短く、成形品を直接溶融接合させる点でランニング
コストが低くなり、リールの製造においては汎用されて
いる。
【０００６】
【発明が解決しようとする課題】ところで、前述のよう
に記録メディアテープの高記録密度化が図られると、テ
ープの幅方向の振れによる記録再生特性への影響が発生
し、テープの走行高さ精度がより厳密に要求される。テ
ープの走行位置の変動が大きいとリード／ライトのエラ
ーが多くなり、信頼性が低下する。
【０００７】また、ヘッドへの当たりを良好として密着
性を高めるために、テープテンションが大きくなる傾向
があり、このテープテンションが増大すると、リールに
かかる負荷が大きくなり、その負荷によって例えばハブ
が圧縮されてフランジが広がるような変形が生じ、テー
プの走行高さの規制が不十分となってエラーの発生が増
大する問題がある。
【０００８】一方、従来のリールにおけるフランジは、
テープの巻き量、巻き状態が観察できるように透明材料
で形成され、その弾性率すなわち強度がハブとは異なる
ことによって上記の変形が大きく発生する傾向にあっ
た。特に、ハブの端部にフランジを溶着した場合に、超
音波振動を印加する溶着側のフランジの強度が低下する
可能性が大きい。
【０００９】本発明は上記点に鑑みなされたもので、テ
ープテンションの増大に伴う巻き負荷および溶着に伴う
変形を抑制しテープ走行高さ精度を確保して良好な記録
再生特性が得られるようにした記録メディアテープ用リ
ールを提供することを目的とするものである。
【００１０】
【課題を解決するための手段】本発明の記録メディアテ
ープ用リールは、外周面にテープを巻回する円筒状の樹
脂材料によるハブの端部に、円盤状の樹脂材料によるフ
ランジを溶着してなる記録メディアテープ用リールにお
いて、前記フランジを、前記ハブの樹脂材料と同等また
は同等以上の弾性率を有する樹脂材料で成形したことを
特徴とするものである。
【００１１】特に、ハブの溶着側が開口している場合に
は、フランジをハブよりも弾性率の高い樹脂材料で構成
することが好ましい。
【００１２】前記ハブの樹脂材料の母材と、前記フラン
ジの樹脂材料の母材とが相溶性がない場合に、少なくと
も一方の樹脂材料に相溶性のある樹脂を配合して溶着性
を得るのが好ましい。
【００１３】
【発明の効果】上記のような本発明によれば、外周面に
テープを巻回する円筒状の樹脂材料によるハブの端部に
溶着する円盤状のフランジを、前記ハブの樹脂材料と同
等または同等以上の弾性率を有する樹脂材料で成形した
ことにより、フランジの強度が高まり、ハブの端部への
溶着による強度低下および変形が少なくなり、大きなテ
ープテンションでテープが巻かれても変形が抑制でき、
回転に伴うフランジ外周縁の振れが小さくテープ走行高
さ精度を確保して良好な記録再生特性が得られ、高容量
化に対して十分に対応可能となる。
【００１４】
【発明の実施の形態】以下、図面に示す実施の形態に基
づいて本発明を詳細に説明する。図１は一つの実施の形
態における記録メディアテープ用リールをドライブ装置
の一部と共に示す断面図である。
【００１５】リール１は、磁気テープ等の記録メディア
テープ（図示せず）が外周面２ａに巻回される円筒状の
ハブ２と、このハブ２の一方の端部（図で下方）の外周
から径方向に円盤状に張り出した下フランジ３とが樹脂
材料により一体成形され、上記ハブ２の他方の端部（図
で上方）に樹脂材料により別体成形された円盤状の上フ
ランジ４が超音波溶着されてなる。
【００１６】つまり、上フランジ４は中央の円形状開口
の周縁に突出するボス部４ｂを備え、このボス部４ｂが
ハブ２の開口した端部内周面に嵌装され、不図示の溶着
ホーンが図の上方から押し付けられ、フランジ面４ａの
内周部とハブ２の端面２ｂとの接触面が、印加された超
音波振動により溶着されている。
【００１７】上記ハブ２の内周側部分には円盤状の下フ
ランジ３の内周部を閉塞するように底壁５が連接され、
この底壁５の外表面にはリール１を回転駆動するための
リールギヤ６が環状に刻設され、さらに、このリールギ
ヤ６より内周側にはマグネット式吸引用の環状金属板に
よるリールプレート７が成形時にインサートされてい
る。
【００１８】上記リール１は記録メディアテープが巻回
されて、不図示のカートリッジケースに収納され、ケー
スの底面に開口された開口部からリール１のリールギヤ
６が露出するように記録メディアカートリッジが構成さ
れる。
【００１９】また、ドライブ装置１０は、回転シャフト
１１の上端面に円環状のドライブギヤ１２とマグネット
（図示せず）を備え、そのチャッキング動作は不図示の
バケットに装填されたカートリッジが回転シャフト１１
に対して下降し、ドライブギヤ１２がリールギヤ６に噛
合すると共に、マグネットによりリールプレート７を吸
引して噛合状態を保持する。
【００２０】そして、前記リール１における上フランジ
４が、ハブ２および下フランジ３の樹脂材料と同等また
は同等以上の弾性率を有する樹脂材料で成形されてい
る。両者の樹脂材料は、巻き付けられる記録メディアテ
ープのテープテンションに対応した弾性率（強度）を有
すると共に、相互に溶着可能な材料が選定される。特
に、ハブ２の溶着側（図で上端）が開口しており、上フ
ランジ４も中央が開口しているため、なおかつ、一体の
ハブ２と下フランジ３に比べ溶着側は撓みやすい構造と
なっているため、上フランジ４はハブ２の樹脂材料より
も弾性率の高い樹脂材料で構成するのが好ましい。
【００２１】上記ハブ２の樹脂材料と上フランジ４の樹
脂材料の具体例を、下記の実施例１〜４に示す。
【００２２】＜実施例１＞ハブ２がガラス繊維強化ポリ
カーボネイト樹脂で、上フランジ４が同様にガラス繊維
強化ポリカーボネイト樹脂で成形されてなる。上フラン
ジ４がハブ２と同等の弾性率を有し、相互に溶着可能で
ある。
【００２３】＜実施例２＞ハブ２がガラス繊維強化ポリ
カーボネイト樹脂で、上フランジ４がカーボン繊維強化
ポリカーボネイト樹脂で成形されてなる。上フランジ４
がハブ２と同等以上の弾性率を有し、相互に溶着可能で
ある。
【００２４】＜実施例３＞ハブ２がポリカーボネイト／
ＡＢＳアロイ樹脂で、上フランジ４がガラス繊維強化ポ
リカーボネイト樹脂で成形されてなる。上フランジ４が
ハブ２と同等以上の弾性率を有し、相互に溶着可能であ
る。
【００２５】＜実施例４＞ハブ２がポリエーテルイミド
／ポリカーボネイト樹脂で、上フランジ４がカーボン繊
維強化ポリカーボネイト樹脂で成形されてなる。この例
は、ハブ２および上フランジ４がさらに高い弾性率を有
しているが、ハブ２の樹脂と上フランジ４の樹脂の母材
には相溶性がなく、ハブ２側に相溶性のある樹脂を配合
したことで両者が溶着可能である。
【００２６】本実施の形態によれば、上フランジ４の樹
脂材料をハブ２の樹脂材料と同等または同等以上の弾性
率を有するものとし、上フランジ４の強度が高まると共
に、リール１全体としての強度も高まり、記録容量の増
加に伴う大きなテープテンションでのテープの巻き付け
に対する変形を低減し、さらに、ハブ２と上フランジ４
との溶着に伴う強度低下、変形を抑制でき、リール１が
回転駆動され、リール１の回転に伴って記録メディアテ
ープの走行が行われる際に、上フランジ４および下フラ
ンジ３の面振れが小さく、走行する記録メディアテープ
の高さ位置等に影響を与えることなく、この記録メディ
アテープが正確な高さで記録再生装置の走行路を走行
し、高記録密度における記録再生が良好に行え信頼性が
高められる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording media tape in which a disk-shaped flange is welded to the end of a cylindrical hub on which the tape is wound around the outer peripheral surface. Reel related. 2. Description of the Related Art A recording medium tape such as a magnetic tape is used as a recording medium used in a recording / reproducing apparatus such as an external storage device such as a computer. The recording medium tape is wound around a reel and is a cartridge case. 1-reel and 2-reel type recording media cartridges are provided, loaded in a recording / reproducing apparatus, and the recording media tape is run along with the rotation of the reels, and recording / reproduction is performed on the recording surface. For example, in the external storage magnetic tape, the capacity that can be recorded per volume has recently increased from several tens GB to several hundred GB. In order to realize this high capacity, the track pitch width is narrowed, the tape thickness is reduced to increase the amount of stored tape, and servo signals are written. Accordingly, high precision is required for the tape running mechanism and the cartridge structure of the drive device, and in particular, the shape accuracy and strength of the reel on which the recording media tape is wound are required. The reel comprises a cylindrical hub that winds a tape around its outer peripheral surface, and flanges that are positioned on both sides of the tape that extends from both ends of the hub in a disk shape. In general, when this reel is formed of a resin molded product, one flange and a hub are integrally formed, and the other flange formed separately is fixed to the end of the hub. The hub and the flange are usually fixed by ultrasonic welding. This ultrasonic welding is short in processing time, lowers the running cost in that the molded product is directly melt-bonded, and is widely used in the manufacture of reels. However, when the recording density of the recording media tape is increased as described above, the influence on the recording / reproducing characteristics due to the fluctuation in the width direction of the tape occurs. Travel height accuracy is required more strictly. If the variation in the tape running position is large, read / write errors increase and the reliability decreases. Also, in order to improve the contact with the head and improve the adhesion, the tape tension tends to increase. When the tape tension increases, the load on the reel increases, and the hub compresses the hub by the load. As a result, deformation that causes the flange to widen occurs, and there is a problem that the occurrence of errors increases due to insufficient regulation of the running height of the tape. On the other hand, the flange in the conventional reel is
The tape is formed of a transparent material so that the amount and state of winding of the tape can be observed, and the above-described deformation tends to occur greatly due to the difference in elastic modulus, that is, strength. In particular, when the flange is welded to the end portion of the hub, the strength of the flange on the welding side to which ultrasonic vibration is applied is likely to decrease. The present invention has been made in view of the above points so that the winding load accompanying the increase in tape tension and the deformation accompanying the welding can be suppressed to ensure the tape running height accuracy and good recording / reproducing characteristics can be obtained. An object of the present invention is to provide a recording media tape reel. The reel for recording media tape of the present invention has a flange made of a disk-shaped resin material at the end of a hub made of a cylindrical resin material around which the tape is wound. In the recording media tape reel formed by welding, the flange is formed of a resin material having an elastic modulus equal to or greater than or equal to that of the resin material of the hub. In particular, when the hub is open on the welding side, the flange is preferably made of a resin material having a higher elastic modulus than the hub. If the base material of the resin material of the hub and the base material of the resin material of the flange are not compatible, a compatible resin is blended in at least one of the resin materials to obtain weldability. Is preferred. According to the present invention as described above, the disk-shaped flange welded to the end of the hub by the cylindrical resin material on which the tape is wound around the outer peripheral surface is provided with the resin material of the hub. Molded with a resin material having an elastic modulus equal to or greater than that of the flange, the strength of the flange is increased, the strength reduction and deformation due to welding to the end of the hub is reduced, and even if the tape is wound with a large tape tension Deformation can be suppressed,
The fluctuation of the outer peripheral edge of the flange due to rotation is small, the tape running height accuracy is ensured, and good recording / reproducing characteristics can be obtained, and it is possible to sufficiently cope with the increase in capacity. DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the embodiments shown in the drawings. FIG. 1 is a cross-sectional view showing a recording medium tape reel according to one embodiment together with a part of a drive device. The reel 1 includes a cylindrical hub 2 on which a recording media tape (not shown) such as a magnetic tape is wound around an outer peripheral surface 2a, and an outer periphery of one end (downward in the figure) of the hub 2. A disk-shaped upper flange 4 is integrally formed of a resin material with a lower flange 3 projecting in a disk shape in the radial direction from the other, and is formed separately from the resin material at the other end (upper in the figure) of the hub 2. Ultrasonic welding. That is, the upper flange 4 is provided with a boss portion 4b protruding from the peripheral edge of the central circular opening, and this boss portion 4b is fitted on the inner peripheral surface of the open end of the hub 2 so that a welding horn (not shown) is provided. The contact surface between the inner peripheral portion of the flange surface 4a and the end surface 2b of the hub 2 is welded by the applied ultrasonic vibration. A bottom wall 5 is connected to the inner peripheral side portion of the hub 2 so as to close the inner peripheral portion of the disk-like lower flange 3,
A reel gear 6 for rotationally driving the reel 1 is formed in an annular shape on the outer surface of the bottom wall 5, and a reel plate 7 made of an annular metal plate for magnet type suction is provided on the inner peripheral side of the reel gear 6. Inserted during molding. The recording medium cartridge is constructed such that the recording medium tape is wound around the reel 1 and accommodated in a cartridge case (not shown), and the reel gear 6 of the reel 1 is exposed from an opening formed in the bottom surface of the case. Is done. The drive device 10 further includes an annular drive gear 12 and a magnet (not shown) on the upper end surface of the rotary shaft 11, and the chucking operation is performed by a cartridge loaded in a bucket (not shown). 11
The drive gear 12 meshes with the reel gear 6, and the reel plate 7 is attracted by the magnet to maintain the meshed state. The upper flange 4 of the reel 1 is molded from a resin material having an elastic modulus equal to or greater than that of the resin material of the hub 2 and the lower flange 3. Both resin materials are selected from materials having an elastic modulus (strength) corresponding to the tape tension of the recording media tape to be wound and capable of being welded to each other. In particular, the welding side (upper end in the figure) of the hub 2 is opened, and the center of the upper flange 4 is also opened, so that the welding side is more flexible than the integrated hub 2 and lower flange 3. Therefore, the upper flange 4 is preferably made of a resin material having a higher elastic modulus than the resin material of the hub 2. Specific examples of the resin material of the hub 2 and the resin material of the upper flange 4 are shown in Examples 1 to 4 below. <Embodiment 1> The hub 2 is formed of glass fiber reinforced polycarbonate resin, and the upper flange 4 is formed of glass fiber reinforced polycarbonate resin. The upper flange 4 has an elastic modulus equivalent to that of the hub 2 and can be welded to each other. <Embodiment 2> The hub 2 is formed of glass fiber reinforced polycarbonate resin, and the upper flange 4 is formed of carbon fiber reinforced polycarbonate resin. Upper flange 4
Has an elastic modulus equal to or higher than that of the hub 2 and can be welded to each other. <Embodiment 3> The hub 2 is polycarbonate /
The upper flange 4 is made of an ABS alloy resin and is formed of a glass fiber reinforced polycarbonate resin. The upper flange 4 has an elastic modulus equal to or higher than that of the hub 2 and can be welded to each other. <Embodiment 4> The hub 2 is molded from polyetherimide / polycarbonate resin, and the upper flange 4 is molded from carbon fiber reinforced polycarbonate resin. In this example, the hub 2 and the upper flange 4 have a higher elastic modulus, but the resin base material of the hub 2 and the resin of the upper flange 4 are not compatible, and are compatible on the hub 2 side. Both can be welded by blending the resin. According to the present embodiment, the resin material of the upper flange 4 has an elastic modulus equal to or greater than that of the resin material of the hub 2, and the strength of the upper flange 4 is increased and the reel 1 as a whole is improved. Strength is also increased, and deformation due to tape winding with a large tape tension accompanying an increase in recording capacity is reduced. Further, the hub 2 and the upper flange 4 are reduced.
The strength reduction and deformation associated with the welding can be suppressed, and when the reel 1 is driven to rotate and the recording media tape travels as the reel 1 rotates, the surface deflection of the upper flange 4 and the lower flange 3 is small. This recording media tape runs on the running path of the recording / playback device at an accurate height without affecting the height position of the running recording media tape. Is increased.
【図面の簡単な説明】
【図１】本発明の一つの実施の形態によるリールの断面
図
【符号の説明】
１ リール
２ ハブ
2a 外周面
2b 端面
３ 下フランジ
４ 上フランジ
4a フランジ面
4b ボス部
６ リールギヤ
10 ドライブ装置
12 ドライブギヤBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a reel according to an embodiment of the present invention. Description of reference numerals 1 Reel 2 Hub 2a Outer peripheral surface 2b End surface 3 Lower flange 4 Upper flange 4a Flange surface 4b Boss 6 Reel gear 10 Drive device 12 Drive gear
Claims (1)
材料によるハブの端部に、円盤状の樹脂材料によるフラ
ンジを溶着してなる記録メディアテープ用リールにおい
て、 前記フランジを、前記ハブの樹脂材料と同等または同等
以上の弾性率を有する樹脂材料で成形したことを特徴と
する記録メディアテープ用リール。What is claimed is: 1. A reel for a recording media tape, wherein a flange made of a disc-shaped resin material is welded to an end of a hub made of a cylindrical resin material on which a tape is wound around an outer peripheral surface. A reel for recording media tape, wherein the flange is formed of a resin material having an elastic modulus equal to or greater than that of the resin material of the hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001186798A JP4651869B2 (en) | 2001-06-20 | 2001-06-20 | Reel for recording media tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001186798A JP4651869B2 (en) | 2001-06-20 | 2001-06-20 | Reel for recording media tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003007030A true JP2003007030A (en) | 2003-01-10 |
| JP4651869B2 JP4651869B2 (en) | 2011-03-16 |
Family
ID=19026192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001186798A Expired - Fee Related JP4651869B2 (en) | 2001-06-20 | 2001-06-20 | Reel for recording media tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4651869B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007334964A (en) * | 2006-06-13 | 2007-12-27 | Fujifilm Corp | Recording tape cartridge |
| JP2010055739A (en) * | 2008-07-28 | 2010-03-11 | Fujifilm Corp | Reel and recording tape cartridge |
| US7891601B2 (en) | 2008-03-05 | 2011-02-22 | Hitachi Maxell, Ltd. | Tape reel |
| JP2011165244A (en) * | 2010-02-05 | 2011-08-25 | Fujifilm Corp | Reel and recording tape cartridge |
| US8123158B2 (en) | 2008-07-28 | 2012-02-28 | Fujifilm Corporation | Reel and recording tape cartridge |
-
2001
- 2001-06-20 JP JP2001186798A patent/JP4651869B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007334964A (en) * | 2006-06-13 | 2007-12-27 | Fujifilm Corp | Recording tape cartridge |
| US7891601B2 (en) | 2008-03-05 | 2011-02-22 | Hitachi Maxell, Ltd. | Tape reel |
| JP2010055739A (en) * | 2008-07-28 | 2010-03-11 | Fujifilm Corp | Reel and recording tape cartridge |
| US7954750B2 (en) | 2008-07-28 | 2011-06-07 | Fujifilm Corporation | Reel and recording tape cartridge |
| US8123158B2 (en) | 2008-07-28 | 2012-02-28 | Fujifilm Corporation | Reel and recording tape cartridge |
| JP2011165244A (en) * | 2010-02-05 | 2011-08-25 | Fujifilm Corp | Reel and recording tape cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4651869B2 (en) | 2011-03-16 |
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