JPS59104771A - Cartridge - Google Patents

Abstract

PURPOSE:To simplify the assembly of a mask member and also to prevent the drop-out of the assembled mask member by forming a cut part to the inner circumference of a hole which is fitted to the boss of the mask member along with a projection formed to he boss and avoiding the coincidence between the cut part and the projection within a driving range. CONSTITUTION:A boss 16 has a projection 20 to prevent the drop-out of a mask member 9a after fitting the boss to the projection, and a cut part 21 is formed to the inner circumference of the member 9a to ensure the engagement with the projection 20. However the part 21 is fitted to the projection 20 and then the boss 16 only when the member 9a gets out of a normal driving range. The member 9a is fitted to the boss 16 at the area where the part 21 is fitted to the projection 20. Then the member 9a is turned up to the position within the normal driving range, i.e., at an area 17a which is lower by one step than an area 12a of a plate 2a. Thus the member 9a is reset to its original position with its elastic force and never drop out of the boss 16.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、たとえば各種データの書込み、または読出し
を行うためのフロッピーディスク装置に使用して有効な
ディスク状の記録媒体を内蔵したカートリッジに関する
ものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cartridge containing a disk-shaped recording medium that is effective for use in, for example, a floppy disk device for writing or reading various data. .

従来例の構成とその問題点 従来、磁気ディスクのごときディスク状の記録媒体を回
転可能に保有するとともに前記ディスク状記録媒体を回
転駆動するだめの駆動体を挿入可能にした第１の開口部
と、前記ディスク状記録媒体に情報を記録または再生す
るヘッドを挿入可能にした第２の開口部および前記磁気
ディスクの回転を検出するためのセンサ開口孔を有する
カートリッジが開発されている。この場合、前記第２の
開口部（または第２の開口部とセンサ開口孔）を、非使
用時には閉口状態にし、使用時に開口状態にするだめの
遮蔽部材が使用されるが、従来のこの種のカートリッジ
においては遮蔽部材を単に、カートリッジケース本体に
設けたボス部に嵌め込んで、その回りで回動させ得るよ
うにしただけの構造となっているため、カートリッジケ
ース本体に組み込んだ後で遮蔽部材がボス部から不要に
離脱する場合があった。Conventional Structure and Problems Conventionally, a first opening rotatably holds a disk-shaped recording medium such as a magnetic disk and into which a drive body for rotationally driving the disk-shaped recording medium can be inserted; A cartridge has been developed that has a second opening into which a head for recording or reproducing information on the disk-shaped recording medium can be inserted, and a sensor opening for detecting the rotation of the magnetic disk. In this case, a shielding member is used that keeps the second opening (or the second opening and the sensor opening hole) closed when not in use and open when in use, but conventional shielding members of this type In this cartridge, the structure is such that the shielding member is simply fitted into a boss provided in the cartridge case body and rotated around it, so the shielding member cannot be removed after being assembled into the cartridge case body. There were cases where the member unnecessarily separated from the boss portion.

発明の目的 本発明は遮蔽部材のボス部への組込みが容易であるとと
もに、組込み後はボス部から遮蔽部材が不要に離脱しな
いようにしたカートリッジを提供することを目的とした
ものである。OBJECTS OF THE INVENTION It is an object of the present invention to provide a cartridge in which a shielding member can be easily assembled into a boss, and the shielding member does not unnecessarily separate from the boss after assembly.

発明の構成 本発明のカートリッジは、回転可能なディスク状記録媒
体と、前記ディスク状記録媒体を回転駆動するだめの駆
動体を挿入可能にした第１の開口部と、前記記録媒体に
対して情報の記録もしくは再生を行うだめのヘッドを挿
入しうる第２の開口部と、前記第１の開口部の近傍に配
設されて前記記録媒体の回転を検出するためのセンサ開
口孔と、前記第２の開口部を開閉しうるようにボス部の
まわりに回動自在に設けられた遮蔽部材を具備し、かつ
前記遮蔽部材の前記ボス部に嵌１り合う孔の内周部に切
欠き部を設け、前記ボス部の外周部には前記切欠き部に
挿通可能な遮蔽部材離脱防市川の突起を設け、前記切欠
き部と前記突起とが合致しない領域において前記遮蔽部
材を前記ボス部のまわシで回動させるように構成したも
のである。Composition of the Invention The cartridge of the present invention includes a rotatable disk-shaped recording medium, a first opening into which a drive body for rotationally driving the disk-shaped recording medium can be inserted, and a first opening into which a drive body for rotationally driving the disk-shaped recording medium can be inserted; a second opening into which a recording or reproducing head can be inserted; a sensor opening disposed near the first opening for detecting rotation of the recording medium; a shielding member rotatably provided around a boss portion so as to open and close the opening of the shielding member; , a protrusion that can be inserted into the notch is provided on the outer periphery of the boss, and the shielding member is inserted into the boss in an area where the notch and the protrusion do not match. It is configured so that it can be rotated with a rotor.

実施例の説明 以下、本発明の実施例を図面に基づいて説明する。Description of examples Embodiments of the present invention will be described below based on the drawings.

第１図は本実施例のカートリッジの要部分解斜視図、第
２図はその要部拡大断面図である。それらの図面におい
て、それぞれの両側縁部にカートリッジ挿入ガイド用の
段差１４ａ、１４ｂを有する下部プレート２＆と上部プ
レート２ｂの内面形状は互いに対向するように同一形成
されている。FIG. 1 is an exploded perspective view of a main part of the cartridge of this embodiment, and FIG. 2 is an enlarged sectional view of the main part. In those drawings, the inner surfaces of the lower plate 2& and the upper plate 2b, which have steps 14a and 14b for cartridge insertion guides on their respective side edges, are formed to be the same so as to face each other.

両面に記録可能なディスク状記録媒体である磁気シート
１は、下部プレー）２ａの凹部１２＆および上部プレー
ト２ｂの凹部（図示せず）により形成される空間部（こ
れを１２と称す）において回転自在なように内蔵される
。The magnetic sheet 1, which is a disk-shaped recording medium capable of recording on both sides, is rotatable in a space (referred to as 12) formed by a recess 12 of a lower plate 2a and a recess (not shown) of an upper plate 2b. It is built in like this.

ハブ６は、ドライブ装置の駆動軸（図示せず）が挿入さ
せるスピンドル穴８を有し、前記磁気シート１の中央部
に取付けられており、磁気シート１と一体的に回転する
。The hub 6 has a spindle hole 8 into which a drive shaft (not shown) of a drive device is inserted, is attached to the center of the magnetic sheet 1, and rotates integrally with the magnetic sheet 1.

前記ハブ６は上下端部の外周部に段部を有し、これが下
部プレー）２ａと上部プレート２ｂのハブ穴３Ｎ、３ｂ
に遊嵌された状態ではさみこまれ、前記駆動軸のスラス
ト方向および半径方向への移動が所要範囲内に規制され
るため、磁気シート１に無理な力が加わることなく前記
磁気シート１を保持しうる。The hub 6 has stepped portions on the outer periphery of the upper and lower ends, which form the hub holes 3N and 3b of the lower plate 2a and the upper plate 2b.
Since the movement of the drive shaft in the thrust direction and the radial direction is restricted within the required range, the magnetic sheet 1 is held without any excessive force being applied to the magnetic sheet 1. I can do it.

下部プレート２ａおよび上部プレート２ｂには前記磁気
シート１の面に、情報の記録または再生用のヘッド（図
示せず）を当接し、また、前記磁気シート１の半径方向
に前記ヘッドを移動させるだめの長穴状開口部４ａ、４
ｂが設けである。帯状の可１尭性部材１０はポリエチレ
ンなどの可撓性を有する樹脂でできており、その両側縁
部は下部プレー１−２ａおよび上部プレー）２ｂの内面
に互いに対向して設けられた下部プレート案内溝１３＆
と上部プレート案内溝１３ｂ（図示せず）とからなる一
対の案内溝１３内にあり、長手方向に往復自在に案内さ
れる。前記可撓性部材１ｏの一端と下部プレー）２＋＆
の間には捩りバネ部材１５が装架され、下部プレート２
ａ側および上部プレート２ｂ側にそれぞれ配された遮蔽
部材９ａ、９ｂ（ただし、９ｂは図示せず）で開口部４
１Ｌ、　　４ｂを開口、閉口状態に移動付勢するように
なっている。また、前記可撓性部材１０の他端部の両側
縁部は切欠部１ｏｂを有し、この切欠部１０ｂと下部プ
レート２１Ｌおよび上部プレート２ｂの内面との間に遮
蔽部材９Ｊ９ｂの一方の端部をはさみこみながら結合し
ている。A head (not shown) for recording or reproducing information is placed in contact with the surface of the magnetic sheet 1 on the lower plate 2a and the upper plate 2b, and a head for moving the head in the radial direction of the magnetic sheet 1 is provided. Elongated hole-shaped openings 4a, 4
b is a provision. The band-shaped flexible member 10 is made of a flexible resin such as polyethylene, and its both side edges are connected to lower plates provided opposite to each other on the inner surfaces of the lower play 1-2a and the upper play 2b. Guide groove 13&
and an upper plate guide groove 13b (not shown), and is guided reciprocally in the longitudinal direction. One end of the flexible member 1o and the lower play)2+&
A torsion spring member 15 is installed between the lower plate 2
The opening 4 is blocked by shielding members 9a and 9b (however, 9b is not shown) arranged on the a side and the upper plate 2b side, respectively.
1L and 4b are moved and biased into the open and closed states. Further, both side edges of the other end of the flexible member 10 have a notch 1ob, and one end of the shielding member 9J9b is provided between the notch 10b and the inner surfaces of the lower plate 21L and the upper plate 2b. It is joined by sandwiching it.

また、遮蔽部材９ａ、９ｂの他端部は、下部プレート２
ａおよび上部プレー）２ｂの内側にノ＼プ穴３　ａ　ｔ
　　３　ｂと同心的に設けられたボス１６ａ。Further, the other ends of the shielding members 9a and 9b are connected to the lower plate 2.
a and upper play) Nop hole 3 a t inside of 2b
A boss 16a is provided concentrically with 3b.

１６ｂ（第１図では１６ｂは図示せず）の外周に回転自
在に嵌合している。すなわち、遮蔽部材９ａ、ｓｂを開
口部４ａ、４ｂの位置まで摺動回転させて、これを遮蔽
し、同時に磁気ディスク１上に設けられた磁気ディスク
回転検出用のインデックスホール穴７を検出するだめの
検出穴５ａ。16b (16b is not shown in FIG. 1). That is, the shielding members 9a and sb are slid and rotated to the positions of the openings 4a and 4b to shield them and at the same time detect the index hole hole 7 provided on the magnetic disk 1 for detecting the rotation of the magnetic disk. detection hole 5a.

５ｂも遮蔽することによって、空間部１２は外部に対し
て密閉状態となる。遮蔽部材９はプレート２ａ、２ｂ（
７）１２＆、１２ｂ面、ｌＪ一段と低くなりている１７
ａおよび１７ｂ　（但し、１７ｂは図示せず）の範囲で
駆動する。By also shielding 5b, the space 12 becomes sealed from the outside. The shielding member 9 includes plates 2a, 2b (
7) 12&, 12b plane, lJ is lowered 17
a and 17b (however, 17b is not shown).

なお、前記ボス１６には第２図に図示するように、嵌合
後の遮蔽部材９ａが脱落することを防止するだめの突起
２ｏを有し、遮蔽部材９ａの内周には前記ボス１６の突
起２ｏと合致する切欠き部２１を有する。ただし、遮蔽
部材９ａの切欠き２０は、遮蔽部材９ａが正規の駆動範
囲より角度的にずれた場合にボス１６の突起２０と合致
し、ボス１６に嵌合させるべくしである。遮蔽部材９ａ
とボス１６の嵌合は、それぞれの切欠部２１と突起２ｏ
を合致させた箇所で、遮蔽部材９ａをわん曲させた状態
でボス１６に嵌合させる。その後、遮蔽部材９２Ｌを回
転させ、正規の駆動範囲、すなわちプレー）２ａの１２
１より一段低くなっている個所１７ａまでくると、遮蔽
部材９ａはその弾力性でもって元に戻り、容易にボス１
６より脱落す発明の効果 以上の説明より明らかなように、本発明のカートリッジ
は、記録または再生するだめのヘッドを挿入しうる開口
部を所要時に遮蔽するための遮蔽部材のボスと嵌まシ合
う孔の内周に切欠き部を設け、遮蔽部材を保持するボス
に遮蔽部材の脱落を防止する突起を設け、それぞれ切欠
き部と突起部は正規の駆動範囲内では合致することがな
いように配設したものであり、これにより、プレートに
遮蔽部材の組込みが簡単になり、かつ、組込後は遮蔽部
材が容易に脱落するのを防止することが出来るもので、
その効果は非常に太きｋものがある。As shown in FIG. 2, the boss 16 has a projection 2o that prevents the shielding member 9a from falling off after fitting, and the boss 16 has a projection 2o on the inner periphery of the shielding member 9a. It has a notch 21 that matches the protrusion 2o. However, the notch 20 of the shielding member 9a should match the protrusion 20 of the boss 16 and fit into the boss 16 when the shielding member 9a angularly deviates from the normal driving range. Shielding member 9a
The fitting of the boss 16 with the notch 21 and the projection 2o
The shielding member 9a is fitted into the boss 16 in a curved state at the location where the shielding member 9a is aligned. Thereafter, the shielding member 92L is rotated and the normal driving range is set, that is, 12 of play) 2a.
When the shielding member 9a reaches the point 17a, which is one step lower than the boss 1, the shielding member 9a returns to its original position with its elasticity, and is easily attached to the boss 1.
As is clear from the above explanation, the cartridge of the present invention has a boss that fits into the boss of the shielding member for shielding the opening into which the head of the recording or reproducing device can be inserted when necessary. A notch is provided on the inner periphery of the matching hole, and a protrusion is provided on the boss that holds the shielding member to prevent the shielding member from falling off, so that the notch and the protrusion do not match within the normal driving range. This makes it easy to assemble the shielding member into the plate, and prevents the shielding member from easily falling off after assembly.
The effect is very strong.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例の要部分解斜視図、第２図は
その要部拡大断面図である。 １・・・・・・磁気シート、２ａ・・・・・・下部プレ
ート、２ｂ・・・・・・上部プレー）、３２Ｌ、３ｂ・
・・・・・ハブ穴、４２Ｌ、４ｂ・・・・・・長穴状開
口部、６ａ、　　５ｂ・・・・・・検出穴、６・・・・
・・ハブ、７・・・・・・インデックスホール、８・・
・・・・スピンドル穴、９１Ｌ・・・０・遮蔽部材、１
ｏ・・・・・・可撓性部材、１６・・・・・・ボス、２
０・・・・・・突起、２１・・・・・・切欠き部。FIG. 1 is an exploded perspective view of a main part of an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main part. 1... Magnetic sheet, 2a... Lower plate, 2b... Upper plate), 32L, 3b.
...Hub hole, 42L, 4b...Elongated hole opening, 6a, 5b...Detection hole, 6...
...Hub, 7... Index hole, 8...
...Spindle hole, 91L...0, shielding member, 1
o... Flexible member, 16... Boss, 2
0... Protrusion, 21... Notch.

Claims (1)

【特許請求の範囲】[Claims] 回転可能なディスク状記録媒体と、前記ディスク状記録
媒体を回転駆動するだめの駆動体を挿入可能にした第１
の開口部と、前記記録媒体に対して情報の記録もしくは
再生を行うだめのヘッドを挿入しうる第２の開口部と、
前記第１の開口部の近傍に配設されて前記記録媒体の回
転を検出するためのセンサ開口孔と、前記第２の開口部
を開閉しうるようにボス部のまわりに回動自在に設けら
れた遮蔽部材を具備し、かつ前記遮蔽部材の前記ボス部
に嵌まり合う孔の内周部に切欠き部を設け、前記ボス部
の外周部には前記切欠き部に挿通可能な遮蔽部材離脱防
止用の突起を設け、前記切欠き部と前記突起とが合致し
ない領域において前記遮蔽部材を前記ボス部のまわりで
回動させるように構成したことを特徴とするカートリッ
ジ。A first device into which a rotatable disk-shaped recording medium and a drive body for rotationally driving the disk-shaped recording medium can be inserted.
a second opening into which a head for recording or reproducing information on the recording medium can be inserted;
a sensor aperture disposed near the first opening for detecting rotation of the recording medium; and a sensor aperture provided rotatably around a boss to open and close the second aperture. a shielding member provided with a notch on the inner circumference of the hole that fits into the boss of the shielding member, and a shielding member that can be inserted into the notch on the outer circumference of the boss. A cartridge characterized in that a protrusion for preventing detachment is provided, and the shielding member is configured to rotate around the boss in an area where the notch and the protrusion do not match.