JP4146014B2 - Tape reel - Google Patents

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Publication number
JP4146014B2
JP4146014B2 JP34253698A JP34253698A JP4146014B2 JP 4146014 B2 JP4146014 B2 JP 4146014B2 JP 34253698 A JP34253698 A JP 34253698A JP 34253698 A JP34253698 A JP 34253698A JP 4146014 B2 JP4146014 B2 JP 4146014B2
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JP
Japan
Prior art keywords
welding
positioning
flange
hub
rib
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Expired - Fee Related
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JP34253698A
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Japanese (ja)
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JP2000173229A (en
Inventor
誠治 露木
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Fujifilm Corp
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Fujifilm Corp
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Priority to JP34253698A priority Critical patent/JP4146014B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/128—Stepped joint cross-sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
    • B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
    • B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress the deflection of a tape by improving the welding accuracy of a hub and a flange and lessening flange deflection at the time of rotation. SOLUTION: The tape reel is separately provided with positioning portions 6, 7 of a cylindrical hub 2 to be wound with the tape on its outer peripheral surface 2a and a disk-shaped flange 4 and welding portions 8 and 9 for welding both via a welding rib 8a in welding the flange 4 to the end of the hub 2 and is constituted by welding the welding portions 8 and 9 in the state of pressing the positioning portions 6, 7 thereto.

Description

【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固着してなるテープ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その他の記録再生装置に用いられる記録媒体として磁気テープがあり、この磁気テープはテープリールに巻装されて記録再生装置に装填され、該テープリールの回転に伴って磁気テープが走行され、その記録面に記録再生が行われる。
【０００３】
上記テープリールは、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、このテープ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。
【０００４】
上記ハブとフランジの固着は、通常、溶着ボス又は溶着リブ（エネルギダイレクタ）を設けた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、成形品の一部が溶融したものを接合剤として使用する点でランニングコストが低くなり、テープリールの製造においては汎用されている。
【０００５】
【発明が解決しようとする課題】
しかして、従来の溶着リブを介した超音波溶着によるテープリールの固着では、記録密度及び記録精度の向上に対して十分な固着精度を確保することが困難である。つまり高記録密度化さ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、樹脂成形品のハブとフランジの溶着リブを介した超音波溶着では、フランジを回転軸に対して直角に高い精度を確保して溶着することは非常に困難で、近年求められている高密度記録に十分対応できる高精度のリールの開発が急がれている。
【０００６】
前記問題点をより具体的に説明すれば、図７には溶着リブを形成した従来方式のテープリールを示す。外周面に磁気テープが巻回される円筒状のハブ５２の外周面近傍の端面には、円環状に平坦な固着部６０が形成され、一方、円盤状のフランジ５４には内周部にフランジ面から円環状に断面略三角形状の溶着リブ６１が突出形成されている（図７(Ａ)参照）。そして、上記ハブ５２上にフランジ５４を載置し、上方から溶着ホーンの円環状先端面で上記溶着リブ６１上方のフランジ５４を押圧しつつ超音波加振し、図７(Ｂ)のように溶着リブ６１を溶融させてハブ５２と固着してなるものである。
【０００７】
しかし、上記のような溶着リブ６１による固着では、この溶着部分でハブ５２の回転軸方向のフランジ５４の高さ位置の位置決めも行っていることで、その寸法精度が十分に得られない問題を有する。すなわち、フランジ５４の高さ方向の位置は溶着の程度（溶着リブ６１の溶融程度）により変化し、溶着リブ６１の溶融が多い部分ではフランジ５４の高さは低くなり、溶着リブ６１の溶融が少ない部分ではフランジ５４の高さは高くなる。そして、前記溶着リブ６１をフランジ５４の全周で所定の溶融状態に均等に溶着することが困難で、溶着リブ６１の溶融程度が異なるとフランジ５４が傾き、回転時に振れが発生する。また、溶着リブ６１に直接溶着ホーンを接触させることなくこの溶着リブ６１に超音波エネルギを集中させて溶融することから、適正な状態に溶融させるための溶着リブ６１の設計及び超音波溶着の条件設定が複雑で困難である。
【０００８】
さらに、溶着後のフランジ５４に対してこれを引き剥がす方向に外力が加わったとき、フランジ５４の撓みが直接溶着部分に作用し剥離しやすくなることから、その溶着力を高めるために、前記溶着リブ６０を大きく設け高い超音波エネルギーで加振しなければならなかった。
【０００９】
本発明は上記点に鑑みなされたもので、ハブとフランジとの溶着精度を向上してテープの振れの少ないテープリールを提供せんとするものである。
【００１０】
【課題を解決するための手段】
上記課題を解決した本発明のテープリールは、外周面にテープを巻回する円筒状のハブの端部に、中央に円形状の開口を有するとともに該開口の周縁にフランジ面に直交する回転軸方向に突出し前記ハブの内周面に嵌挿するボス部を有する円盤状のフランジを溶着リブを介して溶着してなるテープリールにおいて、前記ハブは、端面に回転軸と直交する位置決め面を有する位置決め部又は前記フランジ面との溶着部を備えると共に、内周面に設けた高さの低い補強リブの先端部に前記ボス部との溶着部又は回転軸と直交する位置決め面を有する位置決め部を備える一方、前記フランジは、前記ハブの端面と当接するフランジ端面にフランジ面と平行な位置決め面を有する位置決め部又は前記ハブの端面との溶着部を備えると共に、前記補強リブの先端に当接する前記ボス部端面に前記補強リブの先端との溶着部又はフランジ面と平行な位置決め面を有する位置決め部を備え、前記ハブとフランジの位置決め部分と溶着部分とが分離して設けられ、溶着前は前記溶着部の溶着リブ先端が溶着相手と当接し、前記位置決め部の両側の位置決め面は前記溶着リブの溶融高さ分だけ離れ、前記溶着部の溶着後に前記位置決め部の両側の位置決め面が当接してフランジ面と平行な方向の位置決めが行われてなることを特徴とするものである。
【００１２】
その際、前記ハブの溶着部又は前記フランジの溶着部に半径方向に延びる溶着リブを設けるか、前記ハブの溶着部に半径方向に延びる溶着リブを設けると共に前記フランジの溶着部に円周方向に延びる溶着リブを設けるのが好ましい。
【００１３】
また、本発明の他のテープリールは、外周面にテープを巻回する円筒状のハブの端部に、中央に円形状の開口を有するとともに、該開口の周縁にフランジ面に直交する回転軸方向に突出し前記ハブの内周面に嵌挿するボス部を有する円盤状のフランジを溶着リブを介して溶着してなるテープリールにおいて、前記ハブは、端面に回転軸と直交する位置決め面を有する位置決め部と、前記フランジとの溶着部が周方向に分離して設けられる一方、前記フランジは、前記ハブの端面と当接するフランジ端面に、フランジ面と平行な位置決め面を有する位置決め部と前記ハブの端面との溶着部が周方向に分離して設けられ、溶着前は前記溶着部の溶着リブ先端が溶着相手と当接し、前記位置決め部の両側の位置決め面は前記溶着リブの溶融高さ分だけ離れ、前記溶着部の溶着後に前記位置決め部の両側の位置決め面が当接してフランジ面と平行な方向の位置決めが行われてなることを特徴とするものである。
【００１４】
【発明の効果】
上記のような本発明によれば、ハブとフランジの位置決め部分と溶着リブを介して溶着する溶着部分とをハブの端面と補強リブの先端とに分離するか、ハブの端面に周方向に分離して設け、位置決め部分を当接した状態で溶着部分を溶着してなることにより、溶着程度の均一性の要件が緩和されて溶着条件の設定が容易で生産性に優れると共に、位置決め部での位置決め確保でフランジを回転軸に対して直角にかつ変形を生じない状態に固着して良好な寸法精度を得ることができ、巻回したテープの幅方向の振れを小さくして、記録密度及び記録精度の向上に対して十分に対応可能となり、さらに、溶着部分での確実な溶着で溶着強度も確保できフランジの外力に対する大きな剥離強度を得ることができる。
【００１５】
また、請求項１の発明では、ハブの端面に位置決め部を設け、内周面の高さの低い補強リブの先端部に溶着部を設ける一方、フランジ端面に位置決め部を設け、ボス部端面に溶着部を設けるために、大きな位置決め面の確保により、溶着のされ方に余り影響を受けずに良好な位置決めで面振れ精度が向上でき、溶着部分が中間内部にあることでフランジの撓み変形に対する溶着強度が確保できる。
【００１６】
【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テープリールの断面図、図２は要部の拡大図である。
【００１７】
テープリール１は、磁気テープが外周面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フランジ部３とが合成樹脂により一体成形され、上記ハブ２の他方の端部に合成樹脂により別体成形された円盤状のフランジ４が溶着により固着されてなる。
【００１８】
上記ハブ２の内周側部分には円盤状のフランジ部３の内周部を閉塞するように内壁１１が連接され、この内壁１１の外側面にはテープリール１を回転駆動するためのリールギヤ１２が環状に刻設され、さらに、このリールギヤ１２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プレート１３が成形時にインサートされている。
【００１９】
また、上記ハブ２の内周面２ｂには前記内壁１１から上方に延びる板状の補強リブ１０が、円周方向で略等間隔に放射方向に連接され、この補強リブ１０によりハブ２の円筒度を保持するようになっている。補強リブ１０の高さは、ハブ２の高さより後述のフランジ４のボス部５の高さ分だけ所定量低い位置に形成されている。
【００２０】
そして、上記ハブ２のフランジ４が固着される端面には、図２に示すように、内周面２ｂ側の部分が低くなるように環状に凹設された段状の位置決め部６が設けられ、この位置決め部６の回転軸Ｓと直交する端面が位置決め面となる。また、前記補強リブ１０の上端には、図３に示すように、半径方向に延びる溶着リブ８ａが設けられて溶着部８に形成されている。この溶着リブ８ａは断面略三角形状で、その寸法形状はテープリール１の大きさ等に応じて適宜設計される。
【００２１】
一方、前記フランジ４は中央に円形状の開口を有し、この開口の周縁にはフランジ面４ａに直交する方向に突出するボス部５が形成され、図２に示すように、このボス部５とフランジ面４ａとの連接角部には、前記ハブ２の段状の位置決め部６に嵌合する環状凸状の位置決め部７が形成されている。そして、このフランジ４における位置決め部７のフランジ面４ａと平行な端面が位置決め面となる。また、前記ボス部５の円環状の下端面が溶着部９に形成されている。
【００２２】
前記ハブ２とフランジ４との溶着は、フランジ４のボス部５をハブ２の内周面２ｂに嵌挿して、そのボス部５先端の溶着部９をハブ２の溶着部８の溶着リブ８ａ先端に当接すると共に、フランジ４の位置決め部７をハブ２の位置決め部６に嵌合して組み付ける。溶着前の組み付け状態においては、フランジ４の位置決め部７の位置決め端面とハブ２の位置決め部６の位置決め端面とは、溶着部８の溶着リブ８ａの溶融高さ（溶着しろ）の分だけ離れている。
【００２３】
そして、上方から溶着ホーンの円環状先端面で上記溶着リブ８ａの上方近傍のフランジ４（ボス部５）を押圧しつつ超音波加振し、溶着リブ８ａを溶融させてフランジ４の溶着部９とハブ２の溶着部８とを溶着すると共に、上記溶着リブ８ａの溶融による高さの低下に伴ってフランジ４の位置決め部７とハブ６の位置決め部６とが当接して、この位置決め状態で溶着を終了する。
【００２４】
本実施形態によれば、ハブ２の端面に位置決め部６を設け、これに対応するフランジ４端面に位置決め部７を設ける一方、ハブ２の補強リブ１０の先端部に溶着部８を設け、これに対応するフランジ４のボス部５端面に溶着部９を設けて、位置決め部分と溶着部分とを分離したことで、大きな位置決め面の確保により、溶着のされ方に余り影響を受けずに良好な位置決めで面振れ精度が向上でき、しかも溶着部８，９がハブ内の中間部にあることでフランジ４の撓み変形に対する溶着強度が高くなる。また、溶着リブ８ａの溶融高さは最終的には位置決めされた状態で規定されることで、フランジ４の固着に変形を生じることなく、全周で均等に固着することができ、成形精度に対応した寸法精度で固着後のテープリール１が形成でき、フランジ４はハブ２の回転軸Ｓに対して垂直に固着でき、このテープリール１を回転して磁気テープを繰り出し又は巻き取る際にフランジ４の回転振れが小さく、走行する磁気テープの幅方向の変動も小さく良好な位置精度となり、記録再生特性への影響も小さく高密度化にも対応可能となる。
【００２５】
なお、上記実施の形態では、溶着リブ８ａはハブ２の補強リブ１０の先端に形成しているが、フランジ４のボス部５の先端溶着部９側に、ハブ２の補強リブ１０に対応する位置に半径方向に延びる溶着リブを設けて同様に溶着するようにしてもよい。
【００２６】
図４は他の実施の形態を示すものであり、溶着リブを溶着部の両側に設けたものであり、その他の位置決め部６，７等は図１〜図３と同様に設けられている。
【００２７】
ハブ２の補強リブ１０先端の溶着部８には、図３に示したような半径方向に延びる溶着リブ８ａが設けられ、さらに、フランジ４のボス部５下端の円環状の溶着部９には、円周方向に延びる円環状の溶着リブ９ａが設けられている。そして、両溶着部８，９の溶着は、両溶着リブ８ａ，９ａの先端が交差する部分で点状に溶着される。
【００２８】
本実施形態によれば、ハブ２とフランジ４の溶着部８，９の両方に互いに交差する溶着リブ８ａ，９ａを形成して、その交差部分で点状に溶着することで、溶融高さが十分に確保でき、一部の溶着リブ８ａ，９ａが溶融不足となってハブ２及びフランジ４の位置決め部６，７が当接しない状態で溶着が行われるのを防止して、全周で均等に溶着することができる。
【００２９】
図５はさらに他の実施の形態を示すものであり、内周側に位置決め部１６，１７を外周側に溶着部１８，１９を設けたものであり、その他は図１〜図３と同様に設けられている。
【００３０】
すなわち、ハブ２のフランジ４が固着される端面には、内周面２ｂ側の部分が低くなるように環状に凹設された段状の溶着部１８が設けられ、また、前記補強リブ１０の上端面が位置決め部１６に形成されている。一方、前記フランジ４には、前記ハブ２の段状の溶着部１８に嵌合する環状凸状の溶着部１９が形成され、この溶着部１９の端面には周方向に延びる溶着リブ１９ａが設けられ、また、ボス部５の円環状の下端面が位置決め部１７に形成されている。
【００３１】
そして、溶着前の組み付け状態においては、フランジ４の位置決め部１７とハブ２の位置決め部１６とは、溶着部１９の溶着リブ１９ａの溶融高さの分だけ離れており、溶着ホーンの先端面で押圧しつつ超音波加振すると、溶着リブ１９ａが溶融して両溶着部１８，１９を溶着すると共に両位置決め部１６，１７が当接し、この位置決め状態で溶着を終了する。
【００３２】
なお、上記溶着リブ１９ａはハブ２の溶着部１８側に設けてもよく、また、半径方向に形成してもよく、さらに、両溶着部１８，１９に互いに交差するように形成してもよい。
【００３３】
次に、図６は他の実施の形態を示すものであり、円環状の端面部分に位置決め部２６，２７と溶着部２８，２９とを周方向に分離して設けたものである。
【００３４】
すなわち、ハブ２のフランジ４が固着される端面には、内周面２ｂ側の部分が低くなるように環状に段部が形成され、この段部に周方向に交互に位置決め部２６と溶着部２８が設けられ、溶着部２８は位置決め部２６より低く凹状に形成されている。この溶着部２８はハブ２の円周方向に略等間隔に複数形成されている。一方、フランジ４には、前記ハブ２の段部に嵌合する環状凸状が形成され、この凸部に周方向に交互に位置決め部２７と溶着部２９とが設けられ、溶着部２９は位置決め部２７より高く凸状に形成され、前記ハブ２の溶着部２８に嵌合可能である。この溶着部２９の端面には周方向に延びる溶着リブ２９ａが設けられている。
【００３５】
そして、フランジ４のボス部５をハブ２の内周面２ｂに嵌挿して、その溶着部２９をハブ２の溶着部２８と周方向位置を合わせて嵌合するように組み付け、溶着ホーンの先端面で押圧しつつ超音波加振すると、溶着リブ２９ａが溶融して両溶着部２８，２９を溶着すると共に両位置決め部２６，２７が当接し、この位置決め状態で溶着を終了する。
【００３６】
なお、上記溶着リブ２９ａはハブ２の溶着部２８側に設けてもよく、また、半径方向に形成してもよく、さらに、両溶着部２８，２９に互いに交差するように形成してもよい。また、ハブ２の内周面２ｂには前述のような補強リブ１０を形成してもよい。
【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テープリールの断面図
【図２】図１の要部拡大図
【図３】図１の補強リブの先端溶着部の拡大斜視図
【図４】他の実施の形態によるテープリールの溶着前の状態を示す要部断面図
【図５】さらに他の実施の形態によるテープリールの溶着前の状態を示す要部断面図
【図６】他の実施の形態によるテープリールの溶着前の状態を一部切除して示す要部斜視図
【図７】従来のテープリールの溶着構造を示す溶着前後の要部断面図
【符号の説明】
１ テープリール
２ ハブ
2a 外周面
2b 内周面
３ フランジ部
４ フランジ
4a フランジ面
５ ボス部
6,7,16,17,26,27 位置決め部
8,9,18,19,28,29 溶着部
8a,9a,19a,29a 溶着リブ
10 補強リブ
Ｓ 回転軸[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tape reel in which a disc-shaped flange is fixed to an end portion of a cylindrical hub around which a tape is wound around an outer peripheral surface.
[0002]
[Prior art]
There is a magnetic tape as a recording medium used in an external storage device such as a computer or other recording / reproducing device. This magnetic tape is wound around a tape reel and loaded in the recording / reproducing device, and the magnetic tape is rotated with the rotation of the tape reel. Is recorded and recording / reproduction is performed on the recording surface.
[0003]
The tape reel includes a cylindrical hub that winds the tape around an outer peripheral surface, and flanges that are positioned on both side surfaces of the tape that is wound in a disk shape from both ends of the hub. In general, when this tape reel is formed of a resin molded product, one flange and a hub are integrally formed, and the other flange separately formed is fixed to the end of the hub.
[0004]
The hub and the flange are usually fixed by ultrasonic welding provided with a welding boss or a welding rib (energy director). This ultrasonic welding has a short processing time and a low running cost in that a part of a molded product is melted is used as a bonding agent, and is widely used in the production of tape reels.
[0005]
[Problems to be solved by the invention]
Therefore, in the conventional tape reel fixing by ultrasonic welding via the welding rib, it is difficult to ensure sufficient fixing accuracy for improvement in recording density and recording accuracy. In other words, when the recording density is increased, the tape wobbling in the width direction has an effect on the recording / reproducing characteristics, and the tape traveling height accuracy is required more strictly. With ultrasonic welding, it is extremely difficult to secure the flange at a right angle to the rotation axis with high accuracy, and the development of a high-accuracy reel that can sufficiently handle the high-density recording demanded in recent years has been rapid. It is peeling off.
[0006]
More specifically, FIG. 7 shows a conventional tape reel having welding ribs. An annular flat adhering portion 60 is formed on the end surface in the vicinity of the outer peripheral surface of the cylindrical hub 52 around which the magnetic tape is wound on the outer peripheral surface, while the disc-shaped flange 54 has a flange on the inner peripheral portion. A welding rib 61 having a substantially triangular cross section is formed so as to protrude from the surface in an annular shape (see FIG. 7A). Then, a flange 54 is mounted on the hub 52, and ultrasonic vibration is applied while pressing the flange 54 above the welding rib 61 with the annular tip surface of the welding horn from above, as shown in FIG. 7B. The welding rib 61 is melted and fixed to the hub 52.
[0007]
However, in the fixing by the welding rib 61 as described above, the positioning of the height position of the flange 54 in the rotation axis direction of the hub 52 is also performed at the welded portion, so that the dimensional accuracy cannot be sufficiently obtained. Have. That is, the position in the height direction of the flange 54 changes depending on the degree of welding (the degree of melting of the welding rib 61). In the portion where the welding rib 61 is melted, the height of the flange 54 is lowered, and the welding rib 61 is melted. In a small part, the height of the flange 54 becomes high. Further, it is difficult to weld the welding rib 61 evenly in a predetermined melted state around the entire circumference of the flange 54. If the degree of melting of the welding rib 61 is different, the flange 54 is tilted and vibration occurs during rotation. In addition, since the ultrasonic energy is concentrated and melted on the welding rib 61 without directly contacting the welding horn with the welding rib 61, the design of the welding rib 61 and the ultrasonic welding conditions for melting in an appropriate state are performed. Setting is complicated and difficult.
[0008]
Further, when an external force is applied to the flange 54 after welding in a direction to peel it off, the bending of the flange 54 directly acts on the welded portion and becomes easy to peel off. Therefore, in order to increase the welding force, the welding is performed. The ribs 60 must be large and vibrated with high ultrasonic energy.
[0009]
The present invention has been made in view of the above points, and aims to provide a tape reel with less tape deflection by improving the welding accuracy between the hub and the flange.
[0010]
[Means for Solving the Problems]
The tape reel of the present invention that has solved the above problems has a rotating shaft that has a circular opening at the center at the end of a cylindrical hub that winds the tape around the outer peripheral surface and that is perpendicular to the flange surface at the periphery of the opening. In a tape reel formed by welding a disc-shaped flange having a boss portion that protrudes in the direction and fitted into the inner peripheral surface of the hub via a welding rib , the hub has a positioning surface orthogonal to the rotation axis at the end surface. provided with a welded portion between the positioning portion and the flange surface, the positioning portion having a positioning surface perpendicular to the welding portion or the rotary shaft of said boss portion to the tip portion of the lower reinforcing rib height provided on the inner peripheral surface comprising one, the flange is provided with a welded portion between the end surface of the positioning section or the hub has a flange surface parallel to the positioning surface to the end surface and the flange end face abutting the hub, said reinforcing Li Tip includes a positioning portion having a welded portion or the flange surface parallel to the positioning surface of the tip of the reinforcing rib on the boss portion end surface abutting the the provided positioning portion and the welding portion of the hub and flange are separated is, before welding the welding rib tip of the weld portion is in contact with the welding opponent person, the positioning surfaces on both sides of the positioning portion is spaced melt height of the welding rib, both sides of the positioning section after the welding of the welded portion The positioning surfaces are in contact with each other and positioning in a direction parallel to the flange surface is performed .
[0012]
At that time, a welding rib extending in the radial direction is provided in the welding portion of the hub or the welding portion of the flange, or a welding rib extending in the radial direction is provided in the welding portion of the hub and the welding portion of the flange is provided in the circumferential direction. It is preferable to provide welding ribs that extend.
[0013]
Another tape reel of the present invention has a circular opening in the center at the end of a cylindrical hub that winds the tape around the outer peripheral surface, and a rotating shaft perpendicular to the flange surface at the periphery of the opening. In a tape reel formed by welding a disc-shaped flange having a boss portion that protrudes in the direction and fitted into the inner peripheral surface of the hub via a welding rib , the hub has a positioning surface orthogonal to the rotation axis at the end surface. A positioning portion and a welded portion between the flange are provided separately in the circumferential direction, and the flange has a positioning surface parallel to the flange surface on the flange end surface contacting the end surface of the hub, and the hub The welded portion with the end surface of the welded portion is provided separately in the circumferential direction, and the tip of the welded rib of the welded portion is in contact with the welding partner before welding, and the positioning surfaces on both sides of the positioning portion are equal to the melt height of the welded rib. Is Away, and it is characterized in that both sides of the positioning surface of the positioning section after the welding of the welding portion is formed by positioning of the flange in a direction parallel to the surface is performed in contact.
[0014]
【The invention's effect】
According to the present invention as described above, the hub and the positioning portion of the flange and the welded portion to be welded via the welding rib are separated into the end surface of the hub and the tip of the reinforcing rib, or separated in the circumferential direction into the end surface of the hub. The welded portion is welded in a state where the positioning portion is in contact with each other, so that the requirement for uniformity of the degree of welding is relaxed, the welding conditions can be easily set, and the productivity is excellent. With the positioning ensured, the flange can be fixed at a right angle to the rotation axis and in a state where no deformation occurs, and good dimensional accuracy can be obtained. It is possible to sufficiently cope with the improvement in accuracy, and further, the welding strength can be secured by the reliable welding at the welding portion, and a large peel strength against the external force of the flange can be obtained.
[0015]
According to the first aspect of the present invention, the positioning portion is provided on the end surface of the hub, the welding portion is provided on the tip of the reinforcing rib having a low inner peripheral surface, and the positioning portion is provided on the end surface of the flange. To provide a welded part, securing a large positioning surface can improve surface runout accuracy with good positioning without much influence on the welding method, and because the welded part is in the middle, it can cope with flange deformation Welding strength can be secured.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a sectional view of a tape reel according to one embodiment, and FIG. 2 is an enlarged view of a main part.
[0017]
The tape reel 1 includes a cylindrical hub 2 around which a magnetic tape is wound around an outer peripheral surface 2a, and a flange portion 3 projecting in a disk shape in the radial direction from the outer periphery of one end (downward in the figure) of the hub 2. Are integrally formed of synthetic resin, and a disc-shaped flange 4 separately formed of synthetic resin is fixed to the other end of the hub 2 by welding.
[0018]
An inner wall 11 is connected to the inner peripheral portion of the hub 2 so as to close the inner peripheral portion of the disc-shaped flange portion 3, and a reel gear 12 for rotationally driving the tape reel 1 is provided on the outer surface of the inner wall 11. Further, a plate 13 made of an annular metal plate for magnet type attraction is inserted on the inner peripheral side of the reel gear 12 during molding.
[0019]
Further, plate-like reinforcing ribs 10 extending upward from the inner wall 11 are connected to the inner peripheral surface 2b of the hub 2 in a radial direction at substantially equal intervals in the circumferential direction. Keep the degree. The height of the reinforcing rib 10 is formed at a position lower than the height of the hub 2 by a predetermined amount by the height of a boss portion 5 of the flange 4 described later.
[0020]
As shown in FIG. 2, a stepped positioning portion 6 is provided on the end surface to which the flange 4 of the hub 2 is fixed. The stepped positioning portion 6 is annularly recessed so that the portion on the inner peripheral surface 2b side is lowered. The end surface orthogonal to the rotation axis S of the positioning portion 6 becomes the positioning surface. Further, as shown in FIG. 3, a welding rib 8 a extending in the radial direction is provided at the upper end of the reinforcing rib 10 to form the welding portion 8. The welding rib 8a has a substantially triangular cross section, and its dimensional shape is appropriately designed according to the size of the tape reel 1 and the like.
[0021]
On the other hand, the flange 4 has a circular opening at the center, and a boss part 5 protruding in a direction perpendicular to the flange surface 4a is formed at the periphery of the opening. As shown in FIG. An annular convex positioning portion 7 that fits into the stepped positioning portion 6 of the hub 2 is formed at the connecting corner between the flange surface 4a and the flange surface 4a. And the end surface parallel to the flange surface 4a of the positioning part 7 in this flange 4 becomes a positioning surface. An annular lower end surface of the boss portion 5 is formed on the weld portion 9.
[0022]
The hub 2 and the flange 4 are welded by inserting the boss portion 5 of the flange 4 into the inner peripheral surface 2 b of the hub 2, and the welded portion 9 at the tip of the boss portion 5 as a welding rib 8 a of the welded portion 8 of the hub 2. While being in contact with the tip, the positioning portion 7 of the flange 4 is fitted and assembled to the positioning portion 6 of the hub 2. In the assembled state before welding, the positioning end surface of the positioning portion 7 of the flange 4 and the positioning end surface of the positioning portion 6 of the hub 2 are separated by the melt height (welding margin) of the welding rib 8a of the welding portion 8. Yes.
[0023]
Then, ultrasonic welding is performed while pressing the flange 4 (boss portion 5) in the vicinity of the upper portion of the welding rib 8a with the annular tip surface of the welding horn from above, so that the welding rib 8a is melted to weld the welding portion 9 of the flange 4. And the welding portion 8 of the hub 2 are welded, and the positioning portion 7 of the flange 4 and the positioning portion 6 of the hub 6 come into contact with each other as the height of the welding rib 8a is reduced due to melting. Finish welding.
[0024]
According to this embodiment, the positioning portion 6 is provided on the end surface of the hub 2 and the positioning portion 7 is provided on the end surface of the corresponding flange 4, while the welding portion 8 is provided on the distal end portion of the reinforcing rib 10 of the hub 2. By providing the welding portion 9 on the end surface of the boss portion 5 of the flange 4 corresponding to the above, and separating the positioning portion and the welding portion, the large positioning surface is ensured and the welding is not affected much by the welding method. The surface runout accuracy can be improved by positioning, and the weld strength against the bending deformation of the flange 4 is increased because the welded portions 8 and 9 are in the intermediate portion in the hub. In addition, the melt height of the welding rib 8a is finally defined in a positioned state, so that the flange 4 can be fixed uniformly over the entire circumference without deformation, and the molding accuracy can be improved. The tape reel 1 after fixing can be formed with corresponding dimensional accuracy, and the flange 4 can be fixed perpendicularly to the rotation axis S of the hub 2. When the tape reel 1 is rotated and the magnetic tape is fed or taken up, the flange is provided. 4 is small, fluctuations in the width direction of the traveling magnetic tape are small, and the position accuracy is good, and the influence on the recording / reproducing characteristics is small and it is possible to cope with high density.
[0025]
In the above embodiment, the welding rib 8 a is formed at the tip of the reinforcing rib 10 of the hub 2, but corresponds to the reinforcing rib 10 of the hub 2 on the tip welding portion 9 side of the boss portion 5 of the flange 4. A welding rib extending in the radial direction may be provided at the position, and welding may be performed in the same manner.
[0026]
FIG. 4 shows another embodiment, in which welding ribs are provided on both sides of the welding part, and other positioning parts 6, 7 and the like are provided in the same manner as in FIGS.
[0027]
The welding portion 8 at the tip of the reinforcing rib 10 of the hub 2 is provided with a welding rib 8 a extending in the radial direction as shown in FIG. 3. Further, an annular welding portion 9 at the lower end of the boss portion 5 of the flange 4 is provided on the annular welding portion 9. An annular welding rib 9a extending in the circumferential direction is provided. And the welding of both the welding parts 8 and 9 is welded in the shape of a spot in the part which the front-end | tip of both welding ribs 8a and 9a cross | intersects.
[0028]
According to the present embodiment, the weld ribs 8a and 9a intersecting each other are formed on both the hub 2 and the welded portions 8 and 9 of the flange 4, and the melt height is increased by spot welding at the intersecting portions. It can be secured sufficiently, preventing welding from occurring in a state where some of the welding ribs 8a and 9a are insufficiently melted and the positioning portions 6 and 7 of the hub 2 and the flange 4 are not in contact with each other, and is uniform over the entire circumference. Can be welded to.
[0029]
FIG. 5 shows still another embodiment, in which positioning portions 16 and 17 are provided on the inner peripheral side and welded portions 18 and 19 are provided on the outer peripheral side, and the others are the same as in FIGS. Is provided.
[0030]
That is, the end surface of the hub 2 to which the flange 4 is fixed is provided with a step-like welded portion 18 that is annularly recessed so that a portion on the inner peripheral surface 2b side is lowered. An upper end surface is formed on the positioning portion 16. On the other hand, the flange 4 is formed with an annular convex welded portion 19 that fits into the stepped welded portion 18 of the hub 2, and a weld rib 19 a extending in the circumferential direction is provided on the end surface of the welded portion 19. In addition, an annular lower end surface of the boss portion 5 is formed in the positioning portion 17.
[0031]
In the assembled state before welding, the positioning portion 17 of the flange 4 and the positioning portion 16 of the hub 2 are separated from each other by the melting height of the welding rib 19a of the welding portion 19, and at the front end surface of the welding horn. When the ultrasonic vibration is applied while pressing, the weld rib 19a is melted to weld the welded portions 18 and 19, and the positioning portions 16 and 17 are brought into contact with each other.
[0032]
The weld rib 19a may be provided on the welded portion 18 side of the hub 2, may be formed in the radial direction, and may be formed so as to intersect the welded portions 18 and 19 with each other. .
[0033]
Next, FIG. 6 shows another embodiment, in which positioning portions 26 and 27 and welded portions 28 and 29 are separately provided in the circumferential direction on an annular end surface portion.
[0034]
That is, an annular step portion is formed on the end surface to which the flange 4 of the hub 2 is fixed so that a portion on the inner peripheral surface 2b side is lowered, and the positioning portion 26 and the welding portion are alternately arranged in the circumferential direction on this step portion. 28 is provided, and the welding portion 28 is formed in a concave shape lower than the positioning portion 26. A plurality of the welded portions 28 are formed at substantially equal intervals in the circumferential direction of the hub 2. On the other hand, the flange 4 is formed with an annular convex shape that fits into the step portion of the hub 2, and the convex portion is provided with positioning portions 27 and welded portions 29 alternately in the circumferential direction. It is formed in a convex shape higher than the portion 27 and can be fitted to the welded portion 28 of the hub 2. A weld rib 29 a extending in the circumferential direction is provided on the end surface of the weld portion 29.
[0035]
Then, the boss portion 5 of the flange 4 is fitted and inserted into the inner peripheral surface 2b of the hub 2, and the welded portion 29 is assembled so as to fit with the welded portion 28 of the hub 2 in the circumferential direction, and the tip of the welding horn is assembled. When ultrasonic vibration is applied while pressing on the surface, the welding rib 29a is melted to weld the welded portions 28 and 29, and the positioning portions 26 and 27 are brought into contact with each other, and the welding is finished in this positioning state.
[0036]
The weld rib 29a may be provided on the weld portion 28 side of the hub 2, may be formed in the radial direction, and may be formed so as to intersect the weld portions 28 and 29 with each other. . Further, the reinforcing rib 10 as described above may be formed on the inner peripheral surface 2 b of the hub 2.
[Brief description of the drawings]
1 is a cross-sectional view of a tape reel according to an embodiment of the present invention. FIG. 2 is an enlarged view of a main part of FIG. 1. FIG. 3 is an enlarged perspective view of a tip welded portion of a reinforcing rib of FIG. FIG. 5 is a cross-sectional view of a main part showing a state before welding of a tape reel according to another embodiment. FIG. 5 is a cross-sectional view of a main part showing a state before welding of a tape reel according to another embodiment. FIG. 7 is a perspective view of a main part of the tape reel according to the embodiment shown in a partially cut-out state. FIG. 7 is a cross-sectional view of the main part before and after welding showing a conventional tape reel welding structure.
1 Tape reel 2 Hub
2a Outer surface
2b Inner peripheral surface 3 Flange 4 Flange
4a Flange surface 5 Boss
6,7,16,17,26,27 Positioning part
8,9,18,19,28,29 weld
8a, 9a, 19a, 29a Welding rib
10 Reinforcing rib S Rotating shaft

Claims (2)

外周面にテープを巻回する円筒状のハブの端部に、中央に円形状の開口を有するとともに該開口の周縁にフランジ面に直交する回転軸方向に突出し前記ハブの内周面に嵌挿するボス部を有する円盤状のフランジを溶着リブを介して溶着してなるテープリールにおいて、
前記ハブは、端面に回転軸と直交する位置決め面を有する位置決め部又は前記フランジ面との溶着部を備えると共に、内周面に設けた高さの低い補強リブの先端部に前記ボス部との溶着部又は回転軸と直交する位置決め面を有する位置決め部を備える一方、
前記フランジは、前記ハブの端面と当接するフランジ端面にフランジ面と平行な位置決め面を有する位置決め部又は前記ハブの端面との溶着部を備えると共に、前記補強リブの先端に当接する前記ボス部端面に前記補強リブの先端との溶着部又はフランジ面と平行な位置決め面を有する位置決め部を備え、
前記ハブとフランジの位置決め部分と溶着部分とが分離して設けられ、溶着前は前記溶着部の溶着リブ先端が溶着相手と当接し、前記位置決め部の両側の位置決め面は前記溶着リブの溶融高さ分だけ離れ、前記溶着部の溶着後に前記位置決め部の両側の位置決め面が当接してフランジ面と平行な方向の位置決めが行われてなることを特徴とするテープリール。At the end of the cylindrical hub around which the tape is wound around the outer peripheral surface, there is a circular opening at the center, and the periphery of the opening projects in the direction of the rotation axis perpendicular to the flange surface, and is inserted into the inner peripheral surface of the hub In a tape reel formed by welding a disc-shaped flange having a boss portion to be welded via a welding rib ,
The hub is provided with a welded portion between the positioning portion and the flange surface having a positioning surface perpendicular to the rotation axis on the end face, and the boss portion to the tip portion of the lower reinforcing rib height provided on the inner peripheral surface While comprising a positioning portion having a positioning surface orthogonal to the welded portion or the rotation axis ,
The flange end face and provided with a welded portion between the end surface of the positioning section or the hub has a flange surface parallel to the positioning surface on a flange end surface that abuts the boss end surface which abuts against the tip end of the reinforcing ribs of the hub wherein comprising a positioning unit having a welding portion or flange surface parallel to the positioning surface of the tip of the reinforcing ribs,
The hub and the positioning portion and the welding portion of the flange is provided separately, before welding the welding rib tip of the weld portion is in contact with the welding opponent person, the positioning surfaces on both sides of the positioning portion is melt height of the welding rib The tape reel is characterized in that, after welding of the welded portion, positioning surfaces on both sides of the positioning portion come into contact with each other and positioning in a direction parallel to the flange surface is performed . 外周面にテープを巻回する円筒状のハブの端部に、中央に円形状の開口を有するとともに、該開口の周縁にフランジ面に直交する回転軸方向に突出し前記ハブの内周面に嵌挿するボス部を有する円盤状のフランジを溶着リブを介して溶着してなるテープリールにおいて、
前記ハブは、端面に回転軸と直交する位置決め面を有する位置決め部と、前記フランジとの溶着部が周方向に分離して設けられる一方、
前記フランジは、前記ハブの端面と当接するフランジ端面に、フランジ面と平行な位置決め面を有する位置決め部と前記ハブの端面との溶着部が周方向に分離して設けられ、
溶着前は前記溶着部の溶着リブ先端が溶着相手と当接し、前記位置決め部の両側の位置決め面は前記溶着リブの溶融高さ分だけ離れ、前記溶着部の溶着後に前記位置決め部の両側の位置決め面が当接してフランジ面と平行な方向の位置決めが行われてなることを特徴とするテープリール。At the end of the cylindrical hub around which the tape is wound on the outer peripheral surface, there is a circular opening at the center, and the peripheral edge of the opening protrudes in the direction of the rotation axis perpendicular to the flange surface and fits on the inner peripheral surface of the hub In a tape reel formed by welding a disc-shaped flange having a boss portion to be inserted through a welding rib ,
While the hub is provided with a positioning portion having a positioning surface orthogonal to the rotation axis on the end surface and a welded portion with the flange separated in the circumferential direction,
The flange is provided on the flange end surface that comes into contact with the end surface of the hub, with a positioning portion having a positioning surface parallel to the flange surface and a welded portion between the end surface of the hub separated in the circumferential direction,
Before welding, the tip of the welding rib of the welded portion is in contact with the welding partner, the positioning surfaces on both sides of the positioning portion are separated by the melt height of the welding rib, and positioning on both sides of the positioning portion after welding of the welding portion A tape reel characterized in that positioning is performed in a direction parallel to the flange surface by contacting the surfaces .
JP34253698A 1998-12-02 1998-12-02 Tape reel Expired - Fee Related JP4146014B2 (en)

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JP2005251272A (en) 2004-03-03 2005-09-15 Fuji Photo Film Co Ltd Welding method of reel for tape cartridge
JP4671852B2 (en) * 2005-12-08 2011-04-20 株式会社小糸製作所 Vehicle lighting
JP4821435B2 (en) * 2006-05-25 2011-11-24 パナソニック電工株式会社 Method for producing decorated resin molded article and decorated resin molded article
JP5052850B2 (en) * 2006-09-21 2012-10-17 豊達電機（香港）有限公司 Ultrasonic welding and joining method of speaker cabinet and speaker cabinet manufactured thereby
JP4767926B2 (en) 2007-08-21 2011-09-07 富士フイルム株式会社 reel
JP4864914B2 (en) * 2008-02-26 2012-02-01 富士フイルム株式会社 Reel and recording tape cartridge
JP4694638B2 (en) * 2009-07-23 2011-06-08 富士フイルム株式会社 reel
JP5127958B2 (en) * 2011-05-30 2013-01-23 富士フイルム株式会社 reel
JP5714532B2 (en) 2012-03-30 2015-05-07 富士フイルム株式会社 reel
JP5944806B2 (en) * 2012-09-27 2016-07-05 日立マクセル株式会社 Tape cartridge
JP5981287B2 (en) * 2012-09-27 2016-08-31 日立マクセル株式会社 Tape cartridge

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