JPH0115040Y2 - - Google Patents
Info
- Publication number
- JPH0115040Y2 JPH0115040Y2 JP5711887U JP5711887U JPH0115040Y2 JP H0115040 Y2 JPH0115040 Y2 JP H0115040Y2 JP 5711887 U JP5711887 U JP 5711887U JP 5711887 U JP5711887 U JP 5711887U JP H0115040 Y2 JPH0115040 Y2 JP H0115040Y2
- Authority
- JP
- Japan
- Prior art keywords
- front cover
- upper half
- support shaft
- locking protrusion
- rotation support
- 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.)
- Expired
Links
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、VTR（ビデオテープレコーダ）に使
用される磁気テープカセツトに係り、特にVTR
挿入側となるカセツト本体の前面に装着される前
蓋の係止構造に関する。[Detailed description of the invention] [Industrial field of application] The present invention relates to a magnetic tape cassette used in a VTR (video tape recorder), and in particular to a magnetic tape cassette used in a VTR (video tape recorder).
This invention relates to a locking structure for a front lid that is attached to the front surface of a cassette main body on the insertion side.
第６図乃至第８図は、家庭用のVTRに使用さ
れる従来からの磁気テープカセツトを示し、第６
図は磁気テープカセツトを下ハーフ側から見た一
部切欠き背面図、第７図は第６図の−断面
図、第８図は要部の側面図である。
Figures 6 to 8 show conventional magnetic tape cassettes used in home VCRs.
The figure is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side, FIG. 7 is a cross-sectional view along the line taken from FIG. 6, and FIG. 8 is a side view of the main parts.
磁気テープカセツト１は、上ハーフ２と下ハー
フ３とで形成したカセツト本体４内に、磁気テー
プ５を巻装する供給リール６と巻取りリール７が
収納され、VTR挿入側となるカセツト本体４の
前部には、両リール６，７から繰り出されて、テ
ープガイド部４ａ，４ａの前面を走行する磁気テ
ープ５を開閉可能に覆う前蓋８が被着されてお
り、前蓋８の一方の回動支軸９側には、該蓋８を
開くためのVTRの操作片が入る案内溝４ｂが形
成されている。 In the magnetic tape cassette 1, a supply reel 6 and a take-up reel 7 for winding a magnetic tape 5 are housed in a cassette body 4 formed by an upper half 2 and a lower half 3, and the cassette body 4 serves as the VTR insertion side. A front cover 8 is attached to the front part of the front cover 8 to open and close the magnetic tape 5 that is unwound from the reels 6 and 7 and runs on the front surfaces of the tape guide parts 4a and 4a. A guide groove 4b into which an operating piece of the VTR for opening the lid 8 is inserted is formed on the pivot shaft 9 side.
上記前蓋８は、前板８ａと天板８ｂの両側に側
板８ｃ，８ｃが延設され、該側板８ｃの内側に長
短の回動支軸９，１０が突設されるもので、長軸
の回動支軸９には、前蓋８を閉状態に保持する前
蓋付勢手段Ａとしてのつる巻き状の前蓋スプリン
グ１１が係止されている。 The front lid 8 has side plates 8c, 8c extending on both sides of a front plate 8a and a top plate 8b, and long and short pivot shafts 9, 10 protruding from the inside of the side plates 8c. A helical front lid spring 11 serving as a front lid biasing means A for holding the front lid 8 in a closed state is engaged with the pivot shaft 9 .
回動支軸９側となるカセツト本体４の前部一側
壁には、前蓋８の側板８ｃを面一に配置する装着
凹部１２が、両ハーフ２，３の突合わせにより形
成され、該凹部１２を形成する上ハーフ２の前側
壁２ａには、下ハーフ３側を開口した大きめの切
欠き部２ｂが、また下ハーフ３の前側壁３ａに
は、切欠き部２ｂの内隅部２ｃと対向する切欠き
部３ｂがそれぞれ設けられており、切欠き部２ｂ
には内隅部２ｃを残して下ハーフ３の前側壁３ａ
が配設され、前蓋８は、回動支軸９の基部が、上
ハーフ２の切欠き部２ｂの内隅部２ｃに仮止めさ
れ、両ハーフ２，３の組付け後は、下ハーフ３の
切欠き部３ｂに囲まれる空間内に回動可能に保持
される。 A mounting recess 12 in which the side plate 8c of the front lid 8 is disposed flush is formed on one side wall of the front part of the cassette main body 4 on the side of the rotation support shaft 9 by butting the two halves 2 and 3, and the recess 12, the front side wall 2a of the upper half 2 has a large notch 2b opening on the lower half 3 side, and the front side wall 3a of the lower half 3 has an inner corner 2c of the notch 2b. Opposing notches 3b are provided respectively, and the notches 2b
the front wall 3a of the lower half 3, leaving the inner corner 2c.
is arranged, and the base of the pivot shaft 9 of the front cover 8 is temporarily fixed to the inner corner 2c of the notch 2b of the upper half 2, and after the two halves 2 and 3 are assembled, the lower half It is rotatably held within the space surrounded by the notch 3b of No. 3.
前蓋スプリング１１は、コイル部１１ａを回動
支軸９に外嵌し、固定端１１ｂを該支軸９に突設
した係止ピン１３に係止して、自由端１１ｃを上
ハーフ２の内面に形成したガイド溝１４に遊嵌さ
せて前蓋８に取付けられる。 The front lid spring 11 has a coil portion 11a fitted onto the rotation support shaft 9, a fixed end 11b locked to a locking pin 13 protruding from the support shaft 9, and a free end 11c attached to the upper half 2. It is attached to the front cover 8 by loosely fitting it into a guide groove 14 formed on the inner surface.
上記前蓋スプリング１１に対応する下ハーフ３
の前隅部には、前蓋係止部材１５が上部両側の支
軸１５ａ，１５ａを下ハーフ３のリブ３ｃ，３ｃ
に回動可能に吊持され、該前蓋係止部材１５は、
一方の支軸１５ａに装着される前蓋係止部材用ス
プリング１６の付勢力によつて、ロツク用突起１
５ｂと解除用突起１５ｃとが下ハーフ３の前記前
側壁３ａから外部へ突出して設けられ、ロツク用
突起１５ｂが前蓋８の側板８ｃに係合して、該蓋
８を閉状態に保持している。 Lower half 3 corresponding to the front lid spring 11 above
At the front corners of
The front lid locking member 15 is rotatably suspended from the
The locking protrusion 1 is moved by the biasing force of the front cover locking member spring 16 attached to one of the support shafts 15a.
5b and a release protrusion 15c are provided to protrude outward from the front wall 3a of the lower half 3, and the locking protrusion 15b engages with the side plate 8c of the front lid 8 to hold the lid 8 in a closed state. ing.
しかしながら、上述のものでは、組付け前の上
ハーフに前蓋が仮止め状態で止められ、前蓋スプ
リングを装着した前蓋の回動支軸を、カセツト本
体前部側及び下ハーフ側へ移動を規制する手段が
ないために、前蓋を仮止めした上ハーフを搬送す
る場合や組立て作業中に、振動或いは衝接によつ
て前蓋が上ハーフから外れることがあり、この際
前蓋スプリングを紛失したり、再組付けの手間を
要する等作業性が悪かつた。
However, in the above-mentioned case, the front cover is temporarily attached to the upper half before assembly, and the pivot shaft of the front cover with the front cover spring attached is moved to the front side of the cassette body and to the lower half side. Because there is no means for regulating the front cover, when transporting or assembling the upper half with the front cover temporarily attached, the front cover may come off from the upper half due to vibration or impact. The workability was poor, as parts were lost and it took time to reassemble them.
本考案は、かかる実情を背景にしてなされたも
ので、組付け前の上ハーフに前蓋を確実に係止す
ることにより、上記問題点を解決して、組付け作
業性を向上した磁気テープカセツトを提供するこ
とを目的としている。 The present invention was developed against the background of the above-mentioned circumstances.The present invention solves the above-mentioned problems by reliably locking the front cover to the upper half before assembly, and is a magnetic tape that improves assembly workability. The purpose is to provide cassettes.
本考案は、上述の目的を達成するため、下ハー
フと共にカセツト本体を形成する上ハーフの一方
の前側壁に、下ハーフの一方の前側壁が配設され
る切欠き部を設け、該切欠き部の内隅部に、カセ
ツト本体の前部を開閉可能に覆う前蓋の一方の回
動支軸を支持すると共に、該回動支軸に前蓋を常
時閉方向に付勢する付勢手段を係合させた磁気テ
ープカセツトにおいて、前記切欠き部に、前記回
動支軸を下ハーフ側へ抜け止めする第１の係止突
部を設けると共に、上ハーフ内面の回動支軸の先
端近接位置に、回動支軸をカセツト本体前部側へ
抜け止めする第２の係止突部を設けたことを特徴
としている。
In order to achieve the above-mentioned object, the present invention provides a notch in one front wall of the upper half that forms the cassette body together with the lower half, in which one of the front walls of the lower half is disposed, and the notch At the inner corner of the cassette body, a biasing means for supporting one pivot shaft of a front cover that can open and close the front part of the cassette body, and for always urging the front cover toward the pivot shaft in the closing direction. In the magnetic tape cassette in which the rotation support shaft is engaged, a first locking protrusion that prevents the rotation support shaft from coming off toward the lower half side is provided in the notch, and a tip of the rotation support shaft on the inner surface of the upper half is provided. It is characterized in that a second locking protrusion is provided at an adjacent position to prevent the pivot shaft from coming off toward the front side of the cassette body.
以下、本考案の一実施例を第１図乃至第５図に
基づいて説明する。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.
尚、上記従来例と同一構成部分については、同
一符号を付して詳細な説明を省略する。 It should be noted that the same components as those of the above-mentioned conventional example are given the same reference numerals and detailed explanations will be omitted.
磁気テープカセツト２０の前蓋８は、前板８ａ
と天板８ｂの両側に側板８ｃ，８ｃを延設した平
面コ字状に形成され、一方の側板８ｃには、上部
先端に円弧状の回動支持部８ｄが形成されてお
り、該支持部８ｄの内側に、前蓋８を常時閉方向
に付勢する付勢手段Ａとしての前蓋スプリング２
１を装着して係合させた長軸の回動支軸２２が突
設されている。 The front cover 8 of the magnetic tape cassette 20 has a front plate 8a.
The top plate 8b is formed in a U-shape in plan with side plates 8c, 8c extended on both sides, and one side plate 8c has an arc-shaped rotation support part 8d formed at its upper tip, and this support part 8d, a front lid spring 2 as a biasing means A that always biases the front lid 8 in the closing direction.
A long rotation support shaft 22 is provided in a protruding manner to which a rotation support shaft 22 is fitted and engaged.
回動支軸２２側となるカセツト本体４の前部一
側壁には、前記従来例と同様に、前蓋８の側板８
ｃ及び回動支持部８ｄを面一に配置する装着凹部
２３が、両ハーフ２，３の突合わせにより形成さ
れている。そして、装着凹部２３を形成する両ハ
ーフ２，３の前側壁２ａ，３ａの外側に、前蓋８
の側板８ｃと回動支持部８ｄが装着される。 On one side wall of the front part of the cassette main body 4 on the rotation support shaft 22 side, there is a side plate 8 of the front lid 8, as in the conventional example.
A mounting recess 23 in which the rotation support portion 8d and the rotation support portion 8d are arranged flush is formed by butting the two halves 2 and 3 together. A front lid 8 is placed on the outside of the front side walls 2a, 3a of both halves 2, 3 forming the mounting recess 23.
The side plate 8c and rotation support portion 8d are attached.
前側壁２ａには、切欠き部２ｂの内隅部２ｃの
下部に、上記回動支軸２２を遊挿できる空隙を置
いて、第１の係止突部２４が、カセツト本体４の
前部側へ突出形成されている。 A space is provided in the front wall 2a at the lower part of the inner corner 2c of the notch 2b in which the rotation support shaft 22 can be inserted loosely, and the first locking protrusion 24 is attached to the front part of the cassette body 4. It is formed to protrude to the side.
上ハーフ２の前側壁２ａと共に、装着凹部２３
を形成する下ハーフ３の前側壁３ａには、上記第
１の係止突部２４と嵌合する切欠き部３ｄが形成
されている。 Along with the front side wall 2a of the upper half 2, the mounting recess 23
A notch 3d that fits into the first locking protrusion 24 is formed in the front side wall 3a of the lower half 3 forming the lower half 3.
また前蓋開口用の案内溝４ｂを形成する上ハー
フ２の仕切壁２ｄ，２ｅのうち、仕切壁２ｄの切
欠き部２ｂ側には、上記内隅部２ｃに遊挿される
前蓋８の回動支軸２２の先端に近接したカセツト
本体４の前部側に、リブ状の第２の係止突部２５
が立設されている。 Furthermore, among the partition walls 2d and 2e of the upper half 2 forming the guide groove 4b for opening the front cover, the notch 2b side of the partition wall 2d is provided with the front cover 8 that is loosely inserted into the inner corner 2c. A rib-shaped second locking protrusion 25 is provided on the front side of the cassette body 4 near the tip of the dynamic support shaft 22.
has been erected.
上記第１の係止突部２４は、上ハーフ２の内隅
部２ｃに遊挿した前蓋８の回動支軸２２の基部を
支承して、該支軸２２の下ハーフ３側への抜け止
めを担持し、第２の係止突部２５は、回動支軸２
２の先端と係合して、カセツト本体４の前部側へ
の抜け止めを担うもので、前蓋８は両係止突部２
４，２５により、上ハーフ２に確実に係止され
る。 The first locking protrusion 24 supports the base of the pivot shaft 22 of the front cover 8 that is loosely inserted into the inner corner 2c of the upper half 2, and supports the pivot shaft 22 of the pivot shaft 22 toward the lower half 3 side. The second locking protrusion 25 carries a retainer and is attached to the rotation support shaft 2.
The front cover 8 engages with the tips of both locking protrusions 2 to prevent the cassette main body 4 from coming off toward the front side.
4 and 25, it is securely latched to the upper half 2.
第１の係止突部２４は、その下面を、第１図及
び第４図に示すように、両ハーフ２，３の接合面
と略面一の幅広形状か、或いは第５図のように、
接合面から離間させて幅狭に形成し、その基部の
下隅部を円弧状となして強度を持たせるようにし
てもよく、また内隅部２ｃは、第１図、第４図の
ように回動支軸２２の外径に合わせた半円形、若
しくは第５図のように角形であつてもよい。 The first locking protrusion 24 has a lower surface with a wide shape that is substantially flush with the joining surfaces of both halves 2 and 3, as shown in FIGS. 1 and 4, or a wide shape as shown in FIG. ,
It may be formed narrowly at a distance from the joint surface, and the lower corner of the base may be formed into an arc shape to provide strength, and the inner corner 2c may be formed as shown in FIGS. 1 and 4. It may be semicircular to match the outer diameter of the rotation support shaft 22, or square as shown in FIG.
また第１の係止突部２４の先端前隅部には、回
動支軸２２の挿入を容易に行なうための円弧状の
面取り部２４ａが、また第２の係止突部２５に
は、カセツト本体４の前部側に、該支軸２２の先
端の挿入を案内するテーパ状の案内面２５ａが、
それぞれ設けられている。 Further, the first locking protrusion 24 has an arcuate chamfered portion 24a at the front corner of its tip to facilitate insertion of the rotation support shaft 22, and the second locking protrusion 25 has an arcuate chamfered portion 24a. A tapered guide surface 25a is provided on the front side of the cassette body 4 to guide insertion of the tip of the support shaft 22.
Each is provided.
前記前蓋スプリング２１は、固定端２１ａと自
由端側の先端２１ｂ及び両端２１ａ，２１ｂ間に
設けられるループ状のスプリング部２１ｃとを板
ばねにより形成したもので、該スプリング２１
は、スプリング部２１ｃを下ハーフ３側へ向け、
回動支軸２２の略半周を抱持させて、固定端２１
ａを該支軸２２の先端側に形成した軸方向のスリ
ツト２６に挿通し、自由端の先端２１ｂを上ハー
フ２のガイド溝２７に幅方向をガイドして取付け
られる。 The front lid spring 21 has a fixed end 21a, a tip 21b on the free end side, and a loop-shaped spring portion 21c provided between both ends 21a, 21b.
Direct the spring part 21c toward the lower half 3 side,
The fixed end 21 is held by approximately half the circumference of the rotation support shaft 22.
a is inserted into an axial slit 26 formed on the distal end side of the support shaft 22, and the free end tip 21b is guided in the guide groove 27 of the upper half 2 in the width direction.
本実施例は以上のように構成されるもので、前
蓋８を上ハーフ２に取付ける際には、前蓋８の短
軸の回動支軸１０を上ハーフ２に軸支させ、長軸
の回動支軸２２を上ハーフ２の前部側から挿入す
る。 The present embodiment is constructed as described above, and when attaching the front cover 8 to the upper half 2, the rotation support shaft 10 of the short axis of the front cover 8 is supported by the upper half 2, and the long axis is Insert the rotation support shaft 22 into the upper half 2 from the front side.
回動支軸２２は、その基部が第１の係止突部２
４の面取り部２４ａに案内されながら、該突部２
４と切欠き部２ｂとの空隙を通り、また先端が第
２の係止突部２５の案内面２５ａを滑り、この反
力で前蓋８の回動支軸２２の取付け側側板８ｃが
外方へ撓みながら進入して行き、更に回動支軸２
２の基部は切欠き部２ｂの内隅部２ｃに、先端は
第２の係止突部２５の内側の段部２８に落込ん
で、取付け位置に配置される。 The rotation support shaft 22 has its base connected to the first locking protrusion 2
While being guided by the chamfered portion 24a of 4, the protrusion 2
4 and the notch 2b, and the tip slides on the guide surface 25a of the second locking protrusion 25, and this reaction force causes the mounting side plate 8c of the rotation support shaft 22 of the front cover 8 to be removed. It approaches while bending towards the
The base portion of the locking member 2 falls into the inner corner 2c of the notch portion 2b, and the tip falls into the inner step portion 28 of the second locking protrusion 25, so that they are placed at the attachment position.
また回動支軸２２の取付けにより、該軸２２に
装着される前蓋スプリング２１の先端が、上ハー
フ２のガイド溝２７へ嵌入されて上ハーフ２と当
接し、スプリング部２１ｃにスプリング力が生じ
て、回動支軸２２を内隅部２ｃに押圧支持する。 Also, by attaching the rotation support shaft 22, the tip of the front cover spring 21 attached to the shaft 22 is fitted into the guide groove 27 of the upper half 2 and comes into contact with the upper half 2, and a spring force is applied to the spring portion 21c. As a result, the rotation support shaft 22 is pressed and supported by the inner corner 2c.
上ハーフ２の内隅部２ｃに装着された回動支軸
２２は、第１の係止突部２４にて下方向への抜け
を防止されると共に、第２の係止突部２５にて前
部側への抜けが防止されるので、回動支軸２２は
いずれの方向へも抜けない本止めとなつて、前蓋
８は上ハーフ２に確実に取付けられる。 The rotation support shaft 22 attached to the inner corner 2c of the upper half 2 is prevented from coming off downward by the first locking protrusion 24, and is prevented from coming off downward by the second locking protrusion 25. Since the pivot shaft 22 is prevented from coming off toward the front side, the pivot shaft 22 becomes a permanent stop that does not come off in any direction, and the front cover 8 is reliably attached to the upper half 2.
従つて、前蓋８を上ハーフ２に組付けた状態で
組立て工程を搬送する場合や、組立て作業中に
も、前蓋８は上ハーフ２へ確実に係止されている
から、振動或いは衝接等によつて妄りに脱れた
り、この脱れによる前蓋スプリング２１の紛失を
防止すると共に再組付けの手間をなくして、作業
性を向上することができる。 Therefore, even when transporting the front cover 8 assembled to the upper half 2 during the assembly process or during the assembly operation, the front cover 8 is securely locked to the upper half 2, so that vibrations or shocks are not caused. It is possible to prevent the front cover spring 21 from accidentally coming off due to contact, etc., and to prevent the front cover spring 21 from being lost due to this coming off, and also to eliminate the trouble of reassembling, thereby improving work efficiency.
尚、双方の係止突部２４，２５の形状は、上記
実施例のみに限定するものでない。また、第２の
係止突部２５の取付け位置は、上記実施例に限定
されず、回動支軸２２の先端近接位置であればよ
い。さらに、上記実施例では、前蓋スプリング２
１が装着される長軸の回動支軸２２を双方の係止
突部２４，２５で係止したが、前蓋スプリング２
５が装着されない短軸の回動支軸１０も同様の手
段で係止するようにしてもよい。 Note that the shapes of both of the locking protrusions 24 and 25 are not limited to those in the above embodiment. Further, the mounting position of the second locking protrusion 25 is not limited to the above embodiment, and may be any position close to the tip of the rotation support shaft 22. Furthermore, in the above embodiment, the front lid spring 2
Although the long rotation support shaft 22 on which the front cover spring 1 is attached is locked with both locking protrusions 24 and 25, the front cover spring 2
The short rotation support shaft 10 to which the rotation support shaft 5 is not attached may also be locked by the same means.
また付勢手段となる前蓋スプリングは板ばねに
限らず、第６図及び第７図に示されるつる巻き状
のスプリング等でも差支えない。 Further, the front lid spring serving as the biasing means is not limited to a plate spring, but may also be a helical spring shown in FIGS. 6 and 7.
本考案の磁気テープカセツトは以上説明したよ
うに、上ハーフの一方の前側壁に、下ハーフの一
方の前部壁を配設する切欠き部を設け、該切欠き
部の内隅部に、カセツト本体の前部を開閉可能に
覆う前蓋の一方の回動支軸を配置すると共に、該
回動支軸に前蓋を常時閉方向に付勢する付勢手段
を係合させ、回動支軸を下ハーフ側へ抜け止めす
る第１の係止突部を切欠き部に、また上ハーフ内
面の回動支軸の先端近接位置に、該支軸をカセツ
ト前部側へ抜け止めする第２の係止突部をそれぞ
れ設けたから、両係止突部により、前蓋は上ハー
フに係止されて脱落なく確実に保持され、したが
つて、前蓋付勢手段の紛失を防止することができ
ると共に、余分な再組付けをなくして、組付け作
業性の向上を図ることができる。しかも第２の係
止突部が回転支軸先端近接位置にあるため、回転
支軸の先端が第２の係止突部の先端を乗越える際
には、前蓋の回動支軸取付け側の側板が外方へ撓
むから、乗越える際に回転支軸に加わる力は、前
蓋全体に分散され第２の係止突部及び回転支軸の
破損の危険性がない。従つて、第２の係止突部及
び回動支軸の材質にとらわれることなく、また、
寸法精度のクリアランスが大きいといつた利点が
ある。
As explained above, the magnetic tape cassette of the present invention is provided with a notch in one front wall of the upper half for arranging one front wall of the lower half, and in the inner corner of the notch. One rotation support shaft of the front cover that covers the front part of the cassette main body so that it can be opened and closed is arranged, and a biasing means that always urges the front cover in the closing direction is engaged with the rotation support shaft, so that the front cover can be rotated. A first locking protrusion that prevents the spindle from coming off toward the lower half side is placed in the notch and at a position near the tip of the rotating spindle on the inner surface of the upper half to prevent the spindle from coming off toward the front side of the cassette. Since the second locking protrusions are respectively provided, the front cover is locked to the upper half by both locking protrusions and is securely held without falling off, thus preventing the front cover biasing means from being lost. In addition, it is possible to eliminate unnecessary reassembly and improve assembly work efficiency. In addition, since the second locking protrusion is located close to the tip of the rotation spindle, when the tip of the rotation spindle crosses the tip of the second locking protrusion, the rotation spindle attachment side of the front cover Since the side plate of the front cover bends outward, the force applied to the rotational support shaft when riding over the front cover is distributed over the entire front cover, and there is no risk of damage to the second locking protrusion and the rotational support shaft. Therefore, regardless of the materials of the second locking protrusion and the pivot shaft,
It has the advantage of having a large clearance for dimensional accuracy.
第１図乃至第５図は本考案の一実施例を示すも
ので、第１図は両ハーフ組付け後の要部の斜視
図、第２図は磁気テープカセツトを下ハーフ側か
ら見た一部切欠き背面図、第３図は上ハーフの要
部を内面から見た一部断面背面図、第４図は要部
側面図、第５図は第１の係止突部の変形例を示す
要部側面図、第６図乃至第８図は従来例を示し、
第６図は磁気テープカセツトを下ハーフ側から見
た一部切欠き背面図、第７図は第６図の−断
面図、第８図は要部の側面図である。
２…上ハーフ、２ａ…前側壁、２ｂ…切欠き
部、２ｃ…内隅部、２ｄ，２ｅ…仕切壁、３…下
ハーフ、３ａ…前側壁、３ｄ…切欠き部、４…カ
セツト本体、４ｂ…案内溝、５…磁気テープ、８
…前蓋、８ｃ…側板、８ｄ…回動支持部、２０…
磁気テープカセツト、２１…前蓋スプリング、２
２…回動支軸、２３…装着凹部、２４…第１の係
止突部、２５…第２の係止突部、２４ａ…面取り
部、２５ａ…案内面、２８…段部。
Figures 1 to 5 show an embodiment of the present invention. Figure 1 is a perspective view of the main parts after both halves are assembled, and Figure 2 is a view of the magnetic tape cassette seen from the lower half side. Fig. 3 is a partial cross-sectional rear view of the main part of the upper half seen from the inside, Fig. 4 is a side view of the main part, and Fig. 5 shows a modification of the first locking protrusion. The main part side views shown in FIGS. 6 to 8 show conventional examples,
FIG. 6 is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side, FIG. 7 is a cross-sectional view along the line taken from FIG. 6, and FIG. 8 is a side view of the main parts. 2... Upper half, 2a... Front side wall, 2b... Notch, 2c... Inner corner, 2d, 2e... Partition wall, 3... Lower half, 3a... Front side wall, 3d... Notch, 4... Cassette body, 4b...Guide groove, 5...Magnetic tape, 8
...Front lid, 8c...Side plate, 8d...Rotation support part, 20...
Magnetic tape cassette, 21...Front cover spring, 2
2... Rotation support shaft, 23... Mounting recess, 24... First locking protrusion, 25... Second locking protrusion, 24a... Chamfered portion, 25a... Guide surface, 28... Step portion.
Claims (1)
ハーフ２の一方の前側壁２ａに、下ハーフ３の一
方の前側壁３ａが配設される切欠き部２ｂを設
け、該切欠き部２ｂの内隅部２ｃに、カセツト本
体４の前部を開閉可能に覆う前蓋８の一方の回動
支軸２２を支持すると共に、該回動支軸２２に前
蓋８を常時閉方向に付勢する付勢手段Ａを係合さ
せた磁気テープカセツトにおいて、前記切欠き部
２ｂに、前記回動支軸２２を下ハーフ３側へ抜け
止めする第１の係止突部２４を設けると共に、上
ハーフ２内面の回動支軸２２の先端近接位置に、
回動支軸２２をカセツト本体前部側へ抜け止めす
る第２の係止突部２５を設けたことを特徴とする
磁気テープカセツト。 One front wall 2a of the upper half 2, which forms the cassette body 4 together with the lower half 3, is provided with a notch 2b in which one front wall 3a of the lower half 3 is disposed, and an inner corner of the notch 2b is provided. The portion 2c supports one pivot shaft 22 of the front cover 8 that covers the front part of the cassette body 4 in an openable/closable manner, and has an attachment that always urges the front cover 8 in the closing direction on the pivot shaft 22. In the magnetic tape cassette in which the force means A is engaged, a first locking protrusion 24 is provided in the notch 2b to prevent the pivot shaft 22 from coming off toward the lower half 3, and the upper half 2 At a position near the tip of the inner rotation shaft 22,
A magnetic tape cassette characterized in that a second locking protrusion 25 is provided to prevent the pivot shaft 22 from coming off toward the front side of the cassette body.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5711887U JPH0115040Y2 (en) | 1987-04-15 | 1987-04-15 | |
| US07/196,222 US4951167A (en) | 1986-08-25 | 1987-08-24 | Magnetic tape cassette with improved front cover supporting mechanism |
| PCT/JP1987/000624 WO1988001787A1 (en) | 1986-08-25 | 1987-08-24 | Cassette for magnetic tapes |
| EP87905480A EP0287664B1 (en) | 1986-08-25 | 1987-08-24 | Cassette for magnetic tapes |
| US07/512,127 US5041939A (en) | 1986-08-25 | 1990-04-17 | Magnetic tape cassette with leaf-shaped spring door closure mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5711887U JPH0115040Y2 (en) | 1987-04-15 | 1987-04-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63164871U JPS63164871U (en) | 1988-10-27 |
| JPH0115040Y2 true JPH0115040Y2 (en) | 1989-05-02 |
Family
ID=30886531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5711887U Expired JPH0115040Y2 (en) | 1986-08-25 | 1987-04-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0115040Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10869708B2 (en) | 2014-09-07 | 2020-12-22 | Ossio, Ltd. | Anisotropic biocomposite material, medical implants comprising same and methods of treatment thereof |
| US10869954B2 (en) | 2016-03-07 | 2020-12-22 | Ossio, Ltd. | Surface treated biocomposite material, medical implants comprising same and methods of treatment thereof |
| US10926004B2 (en) | 2014-12-26 | 2021-02-23 | Ossio Ltd. | Continuous-fiber reinforced biocomposite medical implants |
-
1987
- 1987-04-15 JP JP5711887U patent/JPH0115040Y2/ja not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10869708B2 (en) | 2014-09-07 | 2020-12-22 | Ossio, Ltd. | Anisotropic biocomposite material, medical implants comprising same and methods of treatment thereof |
| US10926004B2 (en) | 2014-12-26 | 2021-02-23 | Ossio Ltd. | Continuous-fiber reinforced biocomposite medical implants |
| US10869954B2 (en) | 2016-03-07 | 2020-12-22 | Ossio, Ltd. | Surface treated biocomposite material, medical implants comprising same and methods of treatment thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63164871U (en) | 1988-10-27 |
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