JPH11273307A - Single-reel magnetic tape cartridge - Google Patents
Single-reel magnetic tape cartridgeInfo
- Publication number
- JPH11273307A JPH11273307A JP9078498A JP9078498A JPH11273307A JP H11273307 A JPH11273307 A JP H11273307A JP 9078498 A JP9078498 A JP 9078498A JP 9078498 A JP9078498 A JP 9078498A JP H11273307 A JPH11273307 A JP H11273307A
- Authority
- JP
- Japan
- Prior art keywords
- lock
- hub
- bottom wall
- reel
- wall
- 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
Landscapes
- Unwinding Webs (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、コンピュータ用デ
ータレコーダーの磁気記録媒体に代表される単リール型
の磁気テープカートリッジに関し、そのリールロック機
構を改良したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a single-reel type magnetic tape cartridge represented by a magnetic recording medium of a data recorder for a computer, and has an improved reel lock mechanism.
【０００２】[0002]
【従来の技術】この種の磁気テープカートリッジにおい
て、図６に示す形態のリールロック機構を備えているも
のがある。そこでは、上フランジ５０と下フランジ５
１、および下フランジ５１と一体に成形した円筒状のハ
ブ５２とでテープリール５３を構成しており、ハブ５２
の内部に配置したロック部材５４で不使用時のテープリ
ール５３の遊動回転を防いでいる。ハブ５２の内底壁の
下面中央には、テープドライブ側の駆動軸で磁気吸着さ
れる鉄板５５が固定されており、その周囲壁にテープド
ライブの駆動軸の駆動歯と噛合する駆動歯５６が設けら
れている。2. Description of the Related Art Some magnetic tape cartridges of this type include a reel lock mechanism as shown in FIG. There, the upper flange 50 and the lower flange 5
1 and a cylindrical hub 52 formed integrally with the lower flange 51 to form a tape reel 53.
The idle rotation of the tape reel 53 at the time of non-use is prevented by the lock member 54 arranged inside. At the center of the lower surface of the inner bottom wall of the hub 52, an iron plate 55 magnetically attracted by a drive shaft on the tape drive side is fixed, and drive teeth 56 meshing with the drive teeth of the drive shaft of the tape drive are fixed on the peripheral wall. Is provided.
【０００３】ロック部材５４は、圧縮コイル形のばね５
７の下端を受け止める円形の座板５８を有し、座板５８
の中央部の上下にスライドボス５９と受動ピン６０とを
有する。スライドボス５９は本体ケース１の上壁６１に
設けたガイド突起６３で上下スライドは可能に、しかし
回転は不能に係合案内されている。座板５８の下面と、
ハブ５２の内底に突設した受座６２の上面とには、互い
に噛合するロック歯６４・６５を有する。従ってロック
歯６４・６５どうしが噛合した状態においては、テープ
リール５３は回転できない。使用時には、テープリール
５３の中央部下面に露出する受動ピン６０をテープドラ
イブの駆動軸で突き上げて、ロック歯６４・６５どうし
の噛合を解除する。同時に鉄板５５を介してテープリー
ル５３を駆動軸上の磁石で吸着し、その回転力を駆動歯
５６を介してテープリール５３に伝達している。The lock member 54 includes a compression coil spring 5.
7 has a circular seat plate 58 for receiving the lower end thereof.
A slide boss 59 and a passive pin 60 are provided above and below the center of the boss. The slide boss 59 is guided by a guide projection 63 provided on the upper wall 61 of the main body case 1 so as to be vertically slidable but not rotatable. A lower surface of the seat plate 58;
Lock teeth 64 and 65 meshing with each other are provided on the upper surface of the receiving seat 62 projecting from the inner bottom of the hub 52. Therefore, when the lock teeth 64 and 65 are engaged with each other, the tape reel 53 cannot rotate. At the time of use, the passive pin 60 exposed on the lower surface of the central portion of the tape reel 53 is pushed up by the drive shaft of the tape drive to release the engagement between the lock teeth 64 and 65. At the same time, the tape reel 53 is attracted by the magnet on the drive shaft via the iron plate 55, and the rotational force is transmitted to the tape reel 53 via the drive teeth 56.
【０００４】[0004]
【発明が解決しようとする課題】上記のテープカートリ
ッジにおいては、ロック部材５４の受動ピン６０を駆動
軸で直接に突き上げて、ロック歯６４・６５どうしの噛
合状態を解除しているので、ロック状態を確実に解除で
きないことがある。ロック部材５４を受座６２の上方へ
分離操作した状態において、ロック部材５４の全体が傾
いて座板５８側のロック歯６４と受座６２側のロック歯
６５とが、傾斜下端側で接当係合していることがあり、
こうした場合には駆動軸が空転してテープリール５３を
確実に回転駆動できないからである。In the above-described tape cartridge, the passive pin 60 of the lock member 54 is directly pushed up by the drive shaft to release the meshing state of the lock teeth 64 and 65. May not be released reliably. In a state where the lock member 54 is separated and operated above the seat 62, the lock member 54 as a whole is inclined so that the lock teeth 64 on the seat plate 58 and the lock teeth 65 on the seat 62 contact at the inclined lower end side. May be engaged,
In such a case, the drive shaft idles and the tape reel 53 cannot be reliably rotated.
【０００５】ガイド突起６３はスライドボス５９と係合
しているので、ロック部材５４が傾動するのを抑止する
ことに役立ってはいる。しかし、ロック部材５４をスム
ーズに上下スライドさせるためには、スライドボス５９
およびガイド突起６３の摺動面間にある程度のクリアラ
ンスを確保する必要があり、このクリアランス分だけロ
ック部材５４が傾動するのを避けられない。これもロッ
ク部材５４が傾く要因になっている。前述のようにテー
プリール５３のロック解除が不十分なままだと、磁気テ
ープに異常な張力が作用して、テープ切断などの重大事
故を生じる。またロック歯６４・６５が欠損したり、あ
るいは異常に摩耗して、リールロックを確実に行えなく
なることもある。Since the guide projection 63 is engaged with the slide boss 59, it serves to prevent the lock member 54 from tilting. However, in order to smoothly slide the lock member 54 up and down, the slide boss 59 is required.
In addition, it is necessary to secure a certain clearance between the sliding surfaces of the guide projections 63, and it is inevitable that the locking member 54 tilts by the clearance. This also causes the locking member 54 to tilt. If the lock of the tape reel 53 is not sufficiently released as described above, abnormal tension acts on the magnetic tape, and a serious accident such as tape cutting occurs. Further, the lock teeth 64 and 65 may be lost or abnormally worn, so that the reel lock may not be reliably performed.
【０００６】本発明の目的は、リールロック機構のロッ
ク解除状態への切り換えが常に確実に行え、リールロッ
ク状態のままで磁気テープがケース外へ引き出し操作さ
れるのを防止し、これにより磁気テープの切断やロック
歯の破損等の重大事故の発生を解消して、信頼性の向上
を期すことにある。本発明の他の目的は、ロック解除部
材の耐久性の向上を図れる単リール型の磁気テープカー
トリッジを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to reliably switch a reel lock mechanism to an unlocked state, to prevent a magnetic tape from being pulled out of a case while the reel is in a locked state. An object of the present invention is to improve the reliability by eliminating the occurrence of serious accidents such as the cutting of the shaft and the breakage of the lock teeth. Another object of the present invention is to provide a single-reel type magnetic tape cartridge capable of improving the durability of the unlocking member.
【０００７】[0007]
【課題を解決するための手段】本発明の磁気テープカー
トリッジは、図１および図２に示すごとく本体ケース１
の内部に、１個のテープリール２がケース底壁１７の駆
動軸挿入口１８上で回転自在に収容されており、テープ
リール２の中央に設けたハブ１０のハブ底壁１１の内側
上面と本体ケース１の上壁１２との間に、不使用時のテ
ープリール２の遊動回転を阻止するリールロック機構が
設けてある。そのリールロック機構は、図１に示すごと
く本体ケース１の上壁１２の内面側に設けたガイド突起
２７で上下スライド可能に、しかし相対回転は不能に係
合案内してあるロック部材１９と、ロック部材１９を押
し下げ付勢するばね２０と、ロック部材１９とハブ底壁
１１の内側上面との間に配置したロック解除部材２１と
を備えている。As shown in FIGS. 1 and 2, a magnetic tape cartridge according to the present invention comprises a main body case 1;
Inside the tape reel 2, a single tape reel 2 is rotatably accommodated on a drive shaft insertion opening 18 of the case bottom wall 17, and the inside of the hub bottom wall 11 of the hub 10 provided at the center of the tape reel 2 A reel lock mechanism is provided between the main case 1 and the upper wall 12 to prevent the tape reel 2 from floating when not in use. As shown in FIG. 1, the reel lock mechanism is slidable up and down by a guide projection 27 provided on the inner surface side of the upper wall 12 of the main body case 1, but is engaged and guided so as not to rotate relative to each other. The spring 20 includes a spring 20 that pushes down and urges the lock member 19, and a lock release member 21 that is arranged between the lock member 19 and the upper inside surface of the hub bottom wall 11.
【０００８】上記ロック部材１９は、ハブ１０の内部に
同心円状に内蔵される筒体２２と、この筒体２２の内部
に設けたばね受壁２３とを有する。そして筒体２２の下
端面とハブ底壁１１の内側上面とには、互いに凹凸係合
してテープリール２の回動を阻止するロック歯２４・２
５をそれぞれ設ける。The lock member 19 has a cylindrical body 22 built concentrically inside the hub 10 and a spring receiving wall 23 provided inside the cylindrical body 22. The lower teeth of the cylindrical body 22 and the upper inner surface of the hub bottom wall 11 are engaged with each other in a concave-convex manner so as to prevent the rotation of the tape reel 2.
5 are provided.
【０００９】上記ロック解除部材２１は、前記筒体２２
内のばね受壁２３の下面側とハブ底壁１１の内側上面と
の間に配置されて、耐摩耗性の合成樹脂からなる基体３
４と、基体３４の上面に積層された金属板３６と、基体
３４から下方に突設された複数個の同長の脚片３５とを
備えている。各脚片３５はこれの下端をハブ底壁１１に
設けた脚片突出孔３７を介してハブ底壁１１の外側下面
より下方へ突出している。複数個の脚片３５は、基体３
４の下面中心から等距離位置で、かつ互いに等間隔に配
設する。The lock release member 21 is provided with the cylinder 22
The base member 3 is disposed between the lower surface of the inner spring receiving wall 23 and the inner upper surface of the hub bottom wall 11 and made of a wear-resistant synthetic resin.
4, a metal plate 36 laminated on the upper surface of the base 34, and a plurality of legs 35 of the same length protruding downward from the base 34. Each leg piece 35 has a lower end protruding downward from the outer lower surface of the hub bottom wall 11 through a leg piece protrusion hole 37 provided in the hub bottom wall 11. The plurality of leg pieces 35 are
4 are arranged at equal distances from the center of the lower surface and at equal intervals from each other.
【００１０】上記ばね受壁２３の下面側と金属板３６の
上面とは、ばね受壁２３の下面側または金属板３６のい
ずれか一方の中央から突設した突起３０で点接触してい
る。ハブ底壁１１の外側下面には、前記脚片突出孔３７
より外周領域にテープドライブの駆動軸Ｄの駆動歯１６
と係合する駆動歯１４が環状に設けられている。The lower surface of the spring receiving wall 23 and the upper surface of the metal plate 36 are in point contact with each other at a projection 30 projecting from the lower surface of the spring receiving wall 23 or the center of one of the metal plates 36. On the outer lower surface of the hub bottom wall 11, the leg piece projecting hole 37 is provided.
The drive teeth 16 of the drive shaft D of the tape drive are located in the outer peripheral area.
The drive teeth 14 which engage with the ring are provided in an annular shape.
【００１１】[0011]
【作用】不使用時におけるテープリール２は、図１に示
すごとくばね２０で押し下げ付勢されたロック部材１９
にロック歯２４・２５を介して噛合しており、これで回
動不能に保持されている。ロック解除部材２１は、その
脚片３５が脚片突出孔３７を介してハブ底壁１１の外側
下面より下方へ突出している。この状態の脚片３５をテ
ープドライブの駆動軸Ｄで押し上げ操作すると、図３に
示すごとくロック部材１９がばね２０に抗して押し上げ
られ、ロック歯２４・２５どうしが互いに離脱してリー
ルロック状態が解除される。When the tape reel 2 is not in use, the lock member 19 urged down by the spring 20 as shown in FIG.
Are engaged with each other via lock teeth 24 and 25, and are thereby held non-rotatably. The unlocking member 21 has its leg 35 projecting downward from the outer lower surface of the hub bottom wall 11 via the leg protrusion hole 37. When the leg piece 35 in this state is pushed up by the drive shaft D of the tape drive, the lock member 19 is pushed up against the spring 20, as shown in FIG. Is released.
【００１２】ロック解除部材２１を介してロック部材１
９を押し上げ操作するのは、ロック部材１９を常に水平
に押し上げ操作できるようにするためである。そのため
にロック解除部材２１には、駆動軸Ｄで押し上げ操作さ
れる複数個の同長の脚片３５を設けている。例えば、ロ
ック部材１９を駆動軸Ｄで直接押し上げ操作する場合に
は、ロック部材１９と駆動軸Ｄの中心が正しく一致して
いないと、ロック部材１９が径方向のいずれかに傾いて
しまうが、ロック解除部材２１を複数個の同長の脚片３
５を介して押し上げ操作すれば、ロック解除部材２１と
駆動軸Ｄとの中心に少々の位置ずれがあっても、ロック
解除部材２１を水平に押し上げることができる。その結
果、ロック解除部材２１が押し上げられた分だけロック
部材１９を水平に押し上げることができて、そのロック
歯２４がロック歯２５から確実に離脱する。The lock member 1 is provided via the lock release member 21.
The reason why the push-up operation of the lock member 9 is performed is to enable the lock member 19 to be constantly pushed up horizontally. For this purpose, the unlocking member 21 is provided with a plurality of legs 35 of the same length that are pushed up by the drive shaft D. For example, when the lock member 19 is directly pushed up by the drive shaft D, if the center of the lock member 19 and the center of the drive shaft D are not correctly aligned, the lock member 19 tilts in one of the radial directions. The lock release member 21 is made of a plurality of leg pieces 3 of the same length.
If the push-up operation is performed via the lock 5, the unlocking member 21 can be pushed up horizontally even if there is a slight displacement between the center of the unlocking member 21 and the drive shaft D. As a result, the lock member 19 can be pushed up horizontally by the amount by which the lock release member 21 is pushed up, and the lock teeth 24 are securely separated from the lock teeth 25.
【００１３】ロック解除部材２１の基体３４の上面に金
属板３６を積層し、この金属板３６の中央、またはばね
受壁２３の下面側中央のいずれか一方から突設した突起
３０を介して金属板３６とばね受壁２３の下面側とが点
接触している。従って、テープリール２の高速回転時に
も該テープリール２と同行回転するロック解除部材２１
と停止状態のロック部材１９との間での摩擦抵抗を減少
でき、ロック部材１９およびロック解除部材２１の摩耗
損傷をよく防止できる。A metal plate 36 is laminated on the upper surface of the base 34 of the unlocking member 21, and the metal plate 36 is formed on the metal plate 36 via a projection 30 protruding from one of the center of the metal plate 36 and the lower surface of the spring receiving wall 23. The plate 36 and the lower surface side of the spring receiving wall 23 are in point contact. Therefore, even when the tape reel 2 rotates at a high speed, the unlocking member 21 rotates along with the tape reel 2.
The frictional resistance between the lock member 19 and the lock member 19 in the stopped state can be reduced, and the wear damage of the lock member 19 and the lock release member 21 can be prevented well.
【００１４】ロック解除部材２１の脚片３５は耐摩耗性
の合成樹脂で形成してあるので、駆動軸Ｄの駆動歯１６
に欠損や損傷を加えることがなく、また脚片３５が駆動
軸Ｄの上端面との摺動により摩耗損傷することもよく防
止する。金属板３６は合成樹脂製の基体３４もよく補強
し、狭小スペース内に対応するためにロック解除部材２
１を薄形化しても、その変形防止を図れ、ロック部材１
９の押し上げ機能を安定確実に達成できる。Since the leg piece 35 of the unlocking member 21 is formed of a wear-resistant synthetic resin, the drive teeth 16 of the drive shaft D are provided.
This prevents the leg 35 from being worn or damaged by sliding with the upper end surface of the drive shaft D. The metal plate 36 also reinforces the base 34 made of synthetic resin well, and the unlocking member 2 is used to cope with a narrow space.
Even if the thickness of the lock member 1 is reduced, the deformation of the lock member 1 can be prevented.
9 can be reliably achieved.
【００１５】[0015]
【発明の実施の形態】図１ないし図４は本発明に係る単
リール型の磁気テープカートリッジの一実施例を示す。
図２において、磁気テープカートリッジは、角箱状の本
体ケース１の内部に一個のテープリール２を収容し、テ
ープリール２に磁気テープ３（以下単にテープと言う）
が巻装されている。テープ３の繰り出し端には、テープ
３を引き出し操作するローディングピン４を連結してあ
る。ローディングピン４は本体ケース１の前部右隅に開
口したテープ引出口５の内方に収容されており、その上
下両端がホルダー６・６で係合保持されることで位置決
めされている。テープ引出口５はスライド開閉自在なシ
ャッター７で開閉できる。1 to 4 show an embodiment of a single reel type magnetic tape cartridge according to the present invention.
In FIG. 2, the magnetic tape cartridge accommodates a single tape reel 2 inside a rectangular box-shaped main body case 1 and a magnetic tape 3 (hereinafter simply referred to as a tape) on the tape reel 2.
Is wound. A loading pin 4 for pulling out the tape 3 is connected to the feeding end of the tape 3. The loading pin 4 is housed inside a tape outlet 5 opened at the front right corner of the main body case 1, and its upper and lower ends are positioned by being engaged and held by holders 6. The tape outlet 5 can be opened and closed by a shutter 7 which can be freely opened and closed.
【００１６】テープリール２は、図１に示すごとく上フ
ランジ８と下フランジ９、および下フランジ９と一体に
成形されて上向きに開口する有底筒状のハブ１０とから
なる。上フランジ８はハブ１０の上端に分離不能に溶着
固定してある。テープリール２のハブ底壁１１の内側上
面と、本体ケース１の上壁１２との間に、不使用時にテ
ープリール２の遊動回転を阻止するリールロック機構が
設けられている。ハブ底壁１１の外側下面には、中央に
円形の鉄板などの磁性体１３を固定し、磁性体１３の周
囲を囲む状態で駆動歯１４を環状に設ける（図４参
照）。駆動歯１４は放射方向へ延びるギヤ歯の一群で形
成してあり、テープドライブの駆動軸Ｄの上端面に備え
た磁石１５の周囲に設けた駆動歯１６と係合して、駆動
軸Ｄの回転力を受け継ぐ。駆動歯１４は、ケース底壁１
７に設けた駆動軸挿入口１８を介してケース外面に露出
している。The tape reel 2 comprises an upper flange 8 and a lower flange 9 as shown in FIG. 1, and a bottomed cylindrical hub 10 formed integrally with the lower flange 9 and opening upward. The upper flange 8 is non-separably welded and fixed to the upper end of the hub 10. A reel lock mechanism is provided between the upper inner surface of the hub bottom wall 11 of the tape reel 2 and the upper wall 12 of the main body case 1 to prevent the tape reel 2 from rotating freely when not in use. A magnetic body 13 such as a circular iron plate is fixed to the center on the outer lower surface of the hub bottom wall 11, and drive teeth 14 are provided in a ring shape so as to surround the periphery of the magnetic body 13 (see FIG. 4). The drive teeth 14 are formed as a group of gear teeth extending in the radial direction. The drive teeth 14 engage with drive teeth 16 provided around a magnet 15 provided on the upper end surface of the drive shaft D of the tape drive. Inherit the torque. The drive teeth 14 are provided on the case bottom wall 1.
7 is exposed on the outer surface of the case via a drive shaft insertion opening 18 provided in the case 7.
【００１７】図１および図３においてリールロック機構
は、テープリール２のハブ底壁１１と、これの上方に対
向する本体ケース１の上壁１２との間に組み込まれるロ
ック部材１９と、ロック部材１９と上壁１２との間に配
置した圧縮コイル形のばね２０と、ロック部材１９とハ
ブ底壁１１の内側上面との間に配置したロック解除部材
２１などで構成する。1 and 3, the reel lock mechanism includes a lock member 19 incorporated between a hub bottom wall 11 of the tape reel 2 and an upper wall 12 of the main body case 1 facing above the hub. It comprises a compression coil type spring 20 disposed between the upper wall 12 and the lock member 19 and an unlocking member 21 disposed between the lock member 19 and the upper inner surface of the hub bottom wall 11.
【００１８】ロック部材１９は、テープリール２のハブ
１０の内部に同心円状に内蔵される筒体２２と、この筒
体２２の内部に一体に形成した水平のばね受壁２３とを
有し、筒体２２の下端全周にロック歯２４を設けてあ
り、このロック歯２４がハブ底壁１１の内側上面の外周
領域に放射状に設けたロック歯２５と係合する。The lock member 19 has a cylindrical body 22 built concentrically inside the hub 10 of the tape reel 2, and a horizontal spring receiving wall 23 integrally formed inside the cylindrical body 22, Lock teeth 24 are provided on the entire circumference of the lower end of the cylindrical body 22, and the lock teeth 24 engage with lock teeth 25 radially provided on the outer peripheral region of the inner upper surface of the hub bottom wall 11.
【００１９】ばね受壁２３の上面中央には筒状のスライ
ドボス２６を上向きに突設してあり、このスライドボス
２６が上壁１２の内面に垂設したガイド突起２７に外嵌
している。スライドボス２６の上端の円周一部には縦溝
２８を入れてあり、この縦溝２８をガイド突起２７の外
周一部に設けた縦リブ２９に嵌入させることにより、ロ
ック部材１９はガイド突起２７で上下スライドは可能
に、しかし相対回転は不能に係合案内される。この点に
関しては、例えばスライドボス２６の孔を多角形に形成
し、これに対応してガイド突起２７を断面多角形に形成
してもよい。A cylindrical slide boss 26 projects upward from the center of the upper surface of the spring receiving wall 23, and the slide boss 26 is fitted externally on a guide projection 27 that is suspended from the inner surface of the upper wall 12. . A vertical groove 28 is formed in a part of the circumference of the upper end of the slide boss 26, and by fitting this vertical groove 28 into a vertical rib 29 provided on a part of the outer periphery of the guide projection 27, the lock member 19 is moved , But can be slid up and down, but relative rotation is impossible. In this regard, for example, the hole of the slide boss 26 may be formed in a polygonal shape, and the guide projection 27 may be formed in a polygonal cross-section correspondingly.
【００２０】ロック部材１９はロック歯２４がハブ１０
内のロック歯２５と係合することで、テープリール２の
回動を阻止する。テープリール２の回動阻止状態は、ガ
イド突起２７およびスライドボス２６の外周を囲む状態
で上壁１２とばね受壁２３との間に装着したばね２０の
押し下げ付勢力によって保持される。The lock member 19 has a lock tooth 24 whose hub 10
The rotation of the tape reel 2 is prevented by engaging with the lock teeth 25 inside. The rotation prevention state of the tape reel 2 is held by the pressing force of the spring 20 mounted between the upper wall 12 and the spring receiving wall 23 while surrounding the outer circumferences of the guide projection 27 and the slide boss 26.
【００２１】テープリール２を回転駆動するときのばね
受壁２３とロック解除部材２１との摩擦抵抗を極力小さ
くするために、ロック部材１９のばね受壁２３の下面中
央には円錐形や部分球面形の突起３０を備えている。こ
の突起３０によりロック部材１９のばね受壁２３の下面
側とロック解除部材２１の上側とを点接触させる。図示
例では、突起３０はロック部材１９とは別体の円板３１
の下面中央に突設してあり、この円板３１をばね受壁２
３の下面に重ね合わせ、円板３１に設けた複数個の係止
爪３２をばね受壁２３に設けた係止孔３３に挿入係合さ
せて固定することで、突起３０がばね受壁２３の下面中
央位置に設定されている。このようにロック部材１９と
突起３０を別体に形成したうえで、両者を一体化するこ
とにより、両者の材質を変えることができる。例えば、
耐摩耗性を必要とする突起３０は、ポリアセタールなど
の樹脂で成形し、ロック部材１９はそれよりも安価なＡ
ＢＳ樹脂、ＰＳ樹脂などで成形することができる。In order to minimize the frictional resistance between the spring receiving wall 23 and the unlocking member 21 when the tape reel 2 is rotationally driven, a conical or partial spherical surface is formed at the center of the lower surface of the spring receiving wall 23 of the locking member 19. The projection 30 has a shape. The projection 30 brings the lower surface side of the spring receiving wall 23 of the lock member 19 into point contact with the upper side of the lock release member 21. In the illustrated example, the protrusion 30 is a disc 31 separate from the lock member 19.
The disk 31 projects from the center of the lower surface of the spring receiving wall 2.
3, and a plurality of locking claws 32 provided on the disk 31 are inserted into and engaged with locking holes 33 provided on the spring receiving wall 23 to be fixed. Is set at the center position of the lower surface of. By forming the lock member 19 and the projection 30 separately as described above and integrating them, the materials of both can be changed. For example,
The protrusions 30 that require wear resistance are formed of a resin such as polyacetal, and the lock member 19 is made of A.
It can be formed of BS resin, PS resin, or the like.
【００２２】ロック解除部材２１は、アセタール樹脂や
ナイロン樹脂など耐摩耗性、自己潤滑性に優れる合成樹
脂で円形の基体３４と、これの下面の外周寄り端から下
方へ突設した複数個（図示例では３個）の同長の脚片３
５とを一体に成形する。各脚片３５は基体３４の下面中
心より等距離位置にあり、かつ互いに等間隔を置いて突
設されている。つまり、図４に示すごとく基体３４の下
面においてこれを中心にして描かれる同一仮想円Ｃ上に
複数個の脚片３５が等間隔で並ぶように設けられてい
る。The unlocking member 21 is made of a synthetic resin having excellent wear resistance and self-lubricating properties such as acetal resin or nylon resin, and a circular base 34, and a plurality of protrusions (see FIG. 3 in the example shown)
And 5 are integrally formed. Each leg piece 35 is located at an equal distance from the center of the lower surface of the base 34, and protrudes at equal intervals from each other. That is, as shown in FIG. 4, on the lower surface of the base 34, a plurality of leg pieces 35 are provided at equal intervals on the same imaginary circle C drawn around the base.
【００２３】この基体３４の上面には、ステンレス板等
の金属板３６を積層一体化する。金属板３６は基体３４
の成形と同時にその上面にインサート成形する。尤も、
これに代えて基体３４の上面に金属板３６を接着剤で一
体に接合してもよい。On the upper surface of the base 34, a metal plate 36 such as a stainless steel plate is laminated and integrated. The metal plate 36 is a base 34
And insert molding on the upper surface at the same time. Of course,
Alternatively, the metal plate 36 may be integrally bonded to the upper surface of the base 34 with an adhesive.
【００２４】ロック解除部材２１は、基体３４がハブ底
壁１１の内側上面で受け止め支持され、各脚片３５がハ
ブ底壁１１に脚片突出孔３７を介してハブ底壁１１の外
側下面より下方へ突出する。脚片突出孔３７はハブ底壁
１１の駆動歯１４と磁性体１３との間に位置するよう設
けてある。In the unlocking member 21, the base 34 is received and supported on the inner upper surface of the hub bottom wall 11, and each leg 35 is formed on the hub bottom wall 11 through the leg piece projecting hole 37 from the outer lower surface of the hub bottom wall 11. Project downward. The leg piece projecting hole 37 is provided so as to be located between the driving tooth 14 of the hub bottom wall 11 and the magnetic body 13.
【００２５】上記構成のリールロック機構においては、
図１に示すごとくロック部材１９がガイド突起２７で回
転不能に保持され、ばね２０で常に押し下げられてい
る。さらに、ロック部材１９とハブ底壁１１とに設けた
ロック歯２４・２５が互いに係合している。従って、不
使用状態におけるテープリール２は回動不能にロック保
持できる。In the reel lock mechanism having the above structure,
As shown in FIG. 1, the lock member 19 is non-rotatably held by the guide projection 27, and is constantly pushed down by the spring 20. Further, lock teeth 24 and 25 provided on the lock member 19 and the hub bottom wall 11 are engaged with each other. Therefore, the tape reel 2 in the unused state can be locked and held so as not to rotate.
【００２６】使用時には、テープドライブに装填すると
シャッター７が開放してローディングピン４がローディ
ング機構で捕捉される。同時に、図３に示すごとくテー
プリール２が磁性体１３を介して駆動軸Ｄの磁石１５に
より下方へ吸着されると同時に、駆動軸Ｄの駆動歯１６
とテープリール２側の駆動歯１４とが係合する。この係
合動作時に、ロック解除部材２１の脚片３５が駆動軸Ｄ
で突き上げられて、脚片突出孔３７内へ押し込まれる。
これでロック解除部材２１はロック部材１９をばね２０
に抗して押し上げ、これまで係合していたロック歯２４
・２５どうしを離脱させて、リールロック状態を解除す
る。その結果、テープリール２が回転可能になってテー
プ３を繰り出しあるいは巻き込み駆動できる。この後に
駆動軸Ｄがテープリール２から離れると、再びテープリ
ール２はロック保持される。In use, when the tape is loaded into the tape drive, the shutter 7 is opened and the loading pin 4 is captured by the loading mechanism. At the same time, as shown in FIG. 3, the tape reel 2 is attracted downward by the magnet 15 of the drive shaft D via the magnetic body 13, and at the same time, the drive teeth 16 of the drive shaft D
And the drive teeth 14 on the tape reel 2 side engage. During this engagement operation, the leg 35 of the unlocking member 21 is
And is pushed into the leg piece protrusion hole 37.
As a result, the unlocking member 21 moves the lock member 19 to the spring 20.
Lock teeth 24 that have been engaged so far.
-Release 25 and release the reel lock state. As a result, the tape reel 2 becomes rotatable, and the tape 3 can be fed or wound. Thereafter, when the drive shaft D separates from the tape reel 2, the tape reel 2 is locked and held again.
【００２７】上記実施例では、ばね受壁２３の下面中央
に、ばね受壁２３とは別体の突起３０を設けたが、これ
に代えて突起３０をばね受壁２３の下面中央に一体に突
出成形することもできる。この場合のロック部材１９は
耐摩耗性および自己潤滑性を有するポリアセタール樹脂
などで成形することが好ましい。図５に示すごとくばね
受壁２３の下面は平坦に形成し、ロック解除部材２１の
金属板３６の中央に突起３０を上向きに膨出形成しても
よい。In the above embodiment, the projection 30 is provided separately from the spring receiving wall 23 at the center of the lower surface of the spring receiving wall 23. Instead, the projection 30 is integrally formed at the center of the lower surface of the spring receiving wall 23. Projection molding can also be used. In this case, the lock member 19 is preferably formed of a polyacetal resin having abrasion resistance and self-lubricating property. As shown in FIG. 5, the lower surface of the spring receiving wall 23 may be formed flat, and the projection 30 may be formed to bulge upward at the center of the metal plate 36 of the unlocking member 21.
【００２８】[0028]
【発明の効果】本発明によれば、ロック部材１９とハブ
底壁１１との間にロック解除部材２１を配置し、ロック
解除部材２１に設けた複数個の脚片３５を駆動軸Ｄで押
し上げ操作することにより、ロック部材１９によるリー
ルロック状態を解除できるようにした。従って、ロック
解除操作時にロック部材１９が傾動するのを防止できる
ため、ロック部材１９のロック歯２４がハブ底壁１１の
ロック歯２５から確実に離脱する。これにより、テープ
リール２がロックされた状態のままテープ３が引き出し
操作されるのを防止でき、テープ破断等の事故発生を防
止できる。According to the present invention, the lock release member 21 is disposed between the lock member 19 and the hub bottom wall 11, and the plurality of leg pieces 35 provided on the lock release member 21 are pushed up by the drive shaft D. By operating, the reel locked state by the lock member 19 can be released. Therefore, since the lock member 19 can be prevented from tilting during the lock release operation, the lock teeth 24 of the lock member 19 are securely separated from the lock teeth 25 of the hub bottom wall 11. Thereby, it is possible to prevent the tape 3 from being pulled out while the tape reel 2 is locked, and to prevent occurrence of an accident such as breakage of the tape.
【００２９】ロック解除部材２１は耐摩耗性の合成樹脂
からなる基体３４と金属板３６との複合体からなり、ロ
ック部材１９を押し上げ操作するロック解除部材２１の
上面は金属板３６で構成し、かつ、その金属板３６の中
央またはばね受壁２３の下面側中央のいずれか一方に突
起３０を設けることで、金属板３６とばね受壁２３の間
は点接触している。従って、テープリール２の高速回転
時にもロック部材１９とロック解除部材２１間での摩擦
抵抗を減少できて、摩擦に対する耐久力にも優れ、耐久
性の向上を図れる。The lock release member 21 is made of a composite of a base 34 made of abrasion-resistant synthetic resin and a metal plate 36, and the upper surface of the lock release member 21 for pushing up the lock member 19 is constituted by a metal plate 36. Further, by providing the projection 30 at one of the center of the metal plate 36 and the center of the lower surface side of the spring receiving wall 23, the metal plate 36 and the spring receiving wall 23 are in point contact with each other. Therefore, even when the tape reel 2 rotates at a high speed, the frictional resistance between the lock member 19 and the lock release member 21 can be reduced, the durability against friction is excellent, and the durability can be improved.
【００３０】ロック解除部材２１の脚片３５は耐摩耗性
の合成樹脂で形成してあるので、駆動軸Ｄの駆動歯１６
に欠損や損傷を加えることがなく、駆動軸Ｄの上端面と
の摺動により脚片３５が摩耗損傷することも防止でき、
この点でも耐久性に優れる。金属板３６による補強によ
りロック解除部材２１の剛性を高めることもできて有利
である。Since the leg 35 of the unlocking member 21 is formed of a wear-resistant synthetic resin, the driving teeth 16 of the driving shaft D are provided.
Without any damage or damage to the legs, and can prevent the leg pieces 35 from being worn and damaged by sliding with the upper end surface of the drive shaft D,
Also in this point, it is excellent in durability. Advantageously, the rigidity of the unlocking member 21 can be increased by reinforcement with the metal plate 36.
【００３１】ロック解除に際しては、リール中心から離
れた位置で複数個の脚片３５を突き上げ操作することに
なるので、ロック解除部材２１が径方向へ傾くのを確実
に防止でき、ロック部材１９を安定的に支持して水平に
押し上げ操作でき、テープリール２のロック解除が確実
に行える。At the time of unlocking, the plurality of leg pieces 35 are pushed up at a position away from the center of the reel, so that the unlocking member 21 can be reliably prevented from tilting in the radial direction, and the lock member 19 can be removed. It can be stably supported and pushed up horizontally, and the lock of the tape reel 2 can be reliably released.
【図１】図２におけるＡ−Ａ線断面図である。FIG. 1 is a sectional view taken along line AA in FIG.
【図２】磁気テープカートリッジの内部平面図である。FIG. 2 is an internal plan view of the magnetic tape cartridge.
【図３】ロック解除状態での縦断正面図である。FIG. 3 is a vertical sectional front view in an unlocked state.
【図４】図１におけるＢ−Ｂ線矢視図である。FIG. 4 is a view taken along line BB in FIG. 1;
【図５】他の実施例を図１に相応して示す縦断正面図で
ある。FIG. 5 is a longitudinal sectional front view showing another embodiment corresponding to FIG. 1;
【図６】リールロック機構の比較例を示す縦断正面図で
ある。FIG. 6 is a longitudinal sectional front view showing a comparative example of the reel lock mechanism.
１ 本体ケース ２ テープリール １０ ハブ １１ ハブ底壁 １２ 本体ケースの上壁 １４ テープリールの駆動歯 １６ 駆動軸の駆動歯 １７ ケース底壁 １８ 駆動軸挿入口 １９ ロック部材 ２０ ばね ２１ ロック解除部材 ２２ 筒体 ２３ ばね受壁 ２７ ガイド突起 ３０ 突起 ３４ 基体 ３５ 脚片 ３６ 金属板 ３７ 脚片突出孔 Ｄ 駆動軸 DESCRIPTION OF SYMBOLS 1 Main body case 2 Tape reel 10 Hub 11 Hub bottom wall 12 Upper wall of main body case 14 Drive teeth of tape reel 16 Drive teeth of drive shaft 17 Case bottom wall 18 Drive shaft insertion opening 19 Lock member 20 Spring 21 Unlock member 22 Tube Body 23 Spring receiving wall 27 Guide projection 30 Projection 34 Base 35 Leg piece 36 Metal plate 37 Leg piece protrusion hole D Drive shaft
Claims (2)
ール２がケース底壁１７の駆動軸挿入口１８上で回転自
在に収容されており、 テープリール２は、中央に上面が開口する有底筒状のハ
ブ１０を有し、このハブ１０のハブ底壁１１の外側下面
が駆動軸挿入口１８に臨んでおり、 ハブ底壁１１の内側上面と本体ケース１の上壁１２との
間に、不使用時のテープリール２の遊動回転を阻止する
リールロック機構が設けられている磁気テープカートリ
ッジにおいて、 前記リールロック機構は、上壁１２の内面側に設けたガ
イド突起２７で上下スライド可能に、しかし相対回転は
不能に係合案内してあるロック部材１９と、ロック部材
１９を押し下げ付勢するばね２０と、ロック部材１９と
ハブ底壁１１の内側上面との間に配置したロック解除部
材２１とを備えており、 ロック部材１９は、ハブ１０の内部に同心円状に内蔵さ
れる筒体２２と、この筒体２２の内部に設けたばね受壁
２３とを有しており、 前記筒体２２の下端面とハブ底壁１１の内側上面とに
は、互いに凹凸係合してテープリール２の回動を阻止す
るためのロック歯２４・２５がそれぞれ設けられてお
り、 ロック解除部材２１は、前記筒体２２内のばね受壁２３
の下面側とハブ底壁１１の内側上面との間に配置され
て、耐摩耗性の合成樹脂からなる平板状の基体３４と、
基体３４の上面に積層された金属板３６と、基体３４か
ら下方へ一体に突設された複数個の同長の脚片３５とを
有しており、 各脚片３５はこれの下端をハブ底壁１１に設けた脚片突
出孔３７を介してハブ底壁１１の外側下面より下方へそ
れぞれ突出しており、 ばね受壁２３の下面側と金属板３６の上面とは、ばね受
壁２３の下面側または金属板３６のいずれか一方の中央
から突設した突起３０で点接触しており、 ハブ底壁１１の外側下面には、前記脚片突出孔３７より
外周領域にテープドライブの駆動軸Ｄの駆動歯１６と係
合する駆動歯１４が環状に設けられている単リール型の
磁気テープカートリッジ。1. A tape reel 2 is rotatably accommodated inside a main body case 1 on a drive shaft insertion opening 18 of a case bottom wall 17, and the tape reel 2 has an upper surface opened at the center. The hub 10 has a bottomed cylindrical hub 10, and the outer bottom surface of the hub bottom wall 11 of the hub 10 faces the drive shaft insertion port 18. The inner bottom surface of the hub bottom wall 11 and the upper wall 12 of the main body case 1 are connected to each other. In the magnetic tape cartridge provided with a reel lock mechanism for preventing the idle rotation of the tape reel 2 when not in use, the reel lock mechanism slides up and down by a guide protrusion 27 provided on the inner surface side of the upper wall 12. A lock member 19 guided so as to be able to rotate but not to rotate relative thereto, a spring 20 for pressing down and biasing the lock member 19, and a lock disposed between the lock member 19 and the inner upper surface of the hub bottom wall 11. Release section The lock member 19 includes a cylindrical body 22 concentrically housed inside the hub 10 and a spring receiving wall 23 provided inside the cylindrical body 22. Lock teeth 24 and 25 are provided on the lower end surface of the body 22 and the inner upper surface of the hub bottom wall 11 to engage with each other to prevent the tape reel 2 from rotating. Is a spring receiving wall 23 in the cylindrical body 22.
A flat base body 34 made of a wear-resistant synthetic resin, disposed between the lower surface of the hub and the inner upper surface of the hub bottom wall 11;
It has a metal plate 36 laminated on the upper surface of the base 34 and a plurality of legs 35 of the same length protruding downward from the base 34 integrally. Each leg 35 has a lower end connected to a hub. The lower surface of the spring receiving wall 23 and the upper surface of the metal plate 36 protrude downward from the outer lower surface of the hub bottom wall 11 via leg piece projecting holes 37 provided in the bottom wall 11. A point contact is made with a protrusion 30 protruding from the lower surface side or the center of one of the metal plates 36. A drive shaft of the tape drive is formed on the outer lower surface of the hub bottom wall 11 in an outer peripheral region from the leg piece protrusion hole 37. A single reel type magnetic tape cartridge in which the drive teeth 14 engaging with the drive teeth 16 of D are provided in an annular shape.
心から等距離位置で、かつ互いに等間隔に配設されてい
る請求項１記載の単リール型の磁気テープカートリッ
ジ。2. The single-reel magnetic tape cartridge according to claim 1, wherein the plurality of leg pieces are disposed equidistant from the center of the lower surface of the base and at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09078498A JP3859349B2 (en) | 1998-03-18 | 1998-03-18 | Single reel type magnetic tape cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09078498A JP3859349B2 (en) | 1998-03-18 | 1998-03-18 | Single reel type magnetic tape cartridge |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004367228A Division JP3859671B2 (en) | 2004-12-20 | 2004-12-20 | Single reel type magnetic tape cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11273307A true JPH11273307A (en) | 1999-10-08 |
| JP3859349B2 JP3859349B2 (en) | 2006-12-20 |
Family
ID=14008236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09078498A Expired - Fee Related JP3859349B2 (en) | 1998-03-18 | 1998-03-18 | Single reel type magnetic tape cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3859349B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000067560A (en) * | 1998-08-24 | 2000-03-03 | Fuji Photo Film Co Ltd | Magnetic tape cartridge |
| JP2002197833A (en) * | 2000-12-28 | 2002-07-12 | Tdk Corp | Tape cartridge |
| US6452747B1 (en) * | 2000-04-25 | 2002-09-17 | Imation Corp. | Data storage tape cartridge with wear-resistant brake assembly |
| US7216826B2 (en) | 2003-07-31 | 2007-05-15 | Fujifilm Corporation | Magnetic tape cartridge |
| US7261249B2 (en) | 2003-05-21 | 2007-08-28 | Fujifilm Corporation | Tape cartridge |
| US7540446B2 (en) | 2005-02-18 | 2009-06-02 | Fujifilm Corporation | Recording tape cartridge |
| US7677488B2 (en) | 2003-08-01 | 2010-03-16 | Fujifilm Corporation | Recording tape cartridge |
| JP2016062630A (en) * | 2014-09-18 | 2016-04-25 | 富士フイルム株式会社 | Method for molding release member and recording tape cartridge |
-
1998
- 1998-03-18 JP JP09078498A patent/JP3859349B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000067560A (en) * | 1998-08-24 | 2000-03-03 | Fuji Photo Film Co Ltd | Magnetic tape cartridge |
| US6452747B1 (en) * | 2000-04-25 | 2002-09-17 | Imation Corp. | Data storage tape cartridge with wear-resistant brake assembly |
| JP2002197833A (en) * | 2000-12-28 | 2002-07-12 | Tdk Corp | Tape cartridge |
| US7261249B2 (en) | 2003-05-21 | 2007-08-28 | Fujifilm Corporation | Tape cartridge |
| US7216826B2 (en) | 2003-07-31 | 2007-05-15 | Fujifilm Corporation | Magnetic tape cartridge |
| US7677488B2 (en) | 2003-08-01 | 2010-03-16 | Fujifilm Corporation | Recording tape cartridge |
| US7540446B2 (en) | 2005-02-18 | 2009-06-02 | Fujifilm Corporation | Recording tape cartridge |
| JP2016062630A (en) * | 2014-09-18 | 2016-04-25 | 富士フイルム株式会社 | Method for molding release member and recording tape cartridge |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3859349B2 (en) | 2006-12-20 |
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