JPH0544941Y2 - - Google Patents
Info
- Publication number
- JPH0544941Y2 JPH0544941Y2 JP1987057933U JP5793387U JPH0544941Y2 JP H0544941 Y2 JPH0544941 Y2 JP H0544941Y2 JP 1987057933 U JP1987057933 U JP 1987057933U JP 5793387 U JP5793387 U JP 5793387U JP H0544941 Y2 JPH0544941 Y2 JP H0544941Y2
- Authority
- JP
- Japan
- Prior art keywords
- front cover
- spring
- slit
- front lid
- magnetic tape
- 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 - Lifetime
Links
- 238000009751 slip forming Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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）等に
使用される磁気テープカセツトに係り、特にカセ
ツト本体の前部を覆う前蓋を閉方向に付勢する前
蓋スプリングの取付構造に関する。[Detailed description of the invention] [Field of industrial application] The present invention relates to a magnetic tape cassette used in a VTR (video tape recorder), etc., and in particular, a front cover that covers the front of the cassette body is attached in the closing direction. The present invention relates to a mounting structure for a front lid spring that is biased.
家庭用のVTRに使用される従来の磁気テープ
カセツトでは、カセツト本体からその前部に繰り
出される磁気テープを開閉可能に覆う前蓋が設け
られ、この前蓋は前蓋スプリングによつて常時閉
方向に付勢されている。
Conventional magnetic tape cassettes used in home VTRs are equipped with a front cover that can be opened and closed to cover the magnetic tape that is fed out from the cassette body to the front.This front cover is always held in the closed direction by a front cover spring. is energized by
第５図及び第６図はこの種の磁気テープカセツ
トを示し、第５図に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を、第６図に第５
図の−断面図を示す。 5 and 6 show this type of magnetic tape cassette, FIG. 5 is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side, and FIG.
A cross-sectional view of the figure is shown.
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と
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を覆う前蓋８が開閉可能に設けられてい
る。 The magnetic tape cassette 1 has a supply reel 6 for winding a magnetic tape 5 and a take-up reel 7 housed in a cassette body 4 formed by an upper half 2 and a lower half 3. 4
A front cover 8 is provided at the front of the magnetic tape 8 to be openable and closable, and covers the magnetic tape 5 that is unwound from the reels 6 and 7 and runs on the front surfaces of the tape guide sections 4a and 4a.
上記前蓋８は、前板８ａと天板８ｂの両側に側
板８ｃ，８ｃを延設し、該側板８ｃ，８ｃの内側
にそれぞれ突設した回動支軸９，１０を上ハーフ
２の側壁２ａ，２ａの前部側に支持して取付けら
れるもので、長軸の回動支軸９には、前蓋８を開
方向に付勢する前蓋スプリング１１が取付けられ
ている。 The front lid 8 has side plates 8c and 8c extending on both sides of the front plate 8a and the top plate 8b, and pivot shafts 9 and 10 protruding from the inside of the side plates 8c and 8c, respectively, on the side walls of the upper half 2. The front lid spring 11 is attached to the long rotation support shaft 9 to urge the front lid 8 in the opening direction.
この前蓋スプリング１１は、線ばね材を折曲し
て形成されるもので、コイル部１１ａと回動支軸
９に外嵌し、固定端１１ｂを該支軸９に突設した
係止ピン１２に係止し、自由端１１ｃを上ハーフ
２の内面に形成したガイド溝１３に遊嵌して取付
けられ、トーシヨン力によつて前蓋８を常時閉方
向に付勢している。 The front lid spring 11 is formed by bending a wire spring material, and is fitted onto a coil portion 11a and a rotation support shaft 9, and has a locking pin with a fixed end 11b protruding from the support shaft 9. 12, the free end 11c is loosely fitted into a guide groove 13 formed on the inner surface of the upper half 2, and the front cover 8 is always urged in the closing direction by torsion force.
しかしながら上述の前蓋スプリングでは、コイ
ル部にトーシヨン力を持たせるためにコイル部を
回動支軸へ挿通する作業と、このコイル部を回動
して固定端を係止ピンに係止する回動作業との２
つの作業を必要とし、取付けが面倒であつた。
However, with the above-mentioned front cover spring, there is a process of inserting the coil part into the rotation shaft in order to impart torsion force to the coil part, and a process of rotating the coil part and locking the fixed end to the locking pin. 2 with motion work
The installation was troublesome and required several operations.
また、前記前蓋スプリングは、回動支軸を上ハ
ーフに押付ける付勢力が殆ど働かないため、前蓋
スプリングを介した前蓋と上ハーフとの連結状態
が不安定となり、カセツト組立時に、前蓋あるい
は前蓋スプリングがはずれて前蓋と上ハーフとの
仮組付け状態がくずれて生産性に影響を及ぼす虞
があり、さらに組立後にあつては、前蓋の開閉が
円滑に行われない場合があつた。 In addition, since the front cover spring exerts almost no urging force to press the pivot shaft against the upper half, the state of connection between the front cover and the upper half via the front cover spring becomes unstable, and when assembling the cassette, There is a risk that the front cover or the front cover spring may come off and the temporary assembly between the front cover and the upper half may be disrupted, which may affect productivity, and furthermore, the front cover may not open and close smoothly after assembly. The situation was ripe.
そこで本考案は、カセツト組立時における前蓋
と上ハーフとの組付け状態が安定し、かつ組立後
における前蓋の開閉が円滑に行われる前蓋スプリ
ングを、誤組することなく回動支軸に容易に取付
けることができる磁気テープカセツトを提供する
ことを目的としている。 Therefore, the present invention has developed a front cover spring that stabilizes the assembled state of the front cover and upper half when assembling the cassette, and allows smooth opening and closing of the front cover after assembly. The object of the present invention is to provide a magnetic tape cassette that can be easily attached to a magnetic tape cassette.
上記目的達成のため本考案は、テープリールを
収納したカセツト本体の前部を開閉可能に覆う前
蓋の回動支軸に、該前蓋を閉方向へ付勢する前蓋
スプリングの固定部を係止した磁気テープカセツ
トにおいて、前記回動支軸に、先端から軸方向の
スリツトを形成し、該スリツトにて２分割された
一方の軸部を係止軸部となし、該係止軸部の先端
を先細り状に形成すると共に、前記前蓋スプリン
グを、板ばねにて一端と他端との間に下ハーフ側
に膨出する湾曲部を形成し、前記一端に前記スリ
ツトに挿入される固定端と前記係止軸部を抱持す
る抱持部を連続形成し、前記他端を上ハーフ内面
に摺動可能に圧接する圧接部となしたことを特徴
としている。
In order to achieve the above object, the present invention has a fixed part of a front cover spring that biases the front cover in the closing direction, on the pivot shaft of the front cover that covers the front part of the cassette body housing the tape reel so as to be openable and closable. In the locked magnetic tape cassette, a slit is formed in the rotation support shaft in the axial direction from the tip, one shaft portion divided into two by the slit is used as a locking shaft portion, and the locking shaft portion is The tip of the front lid spring is formed into a tapered shape, and the front lid spring is formed with a plate spring between one end and the other end to form a curved part that bulges toward the lower half side, and the one end is inserted into the slit. It is characterized in that a holding part that holds the fixed end and the locking shaft part is continuously formed, and the other end is made into a pressure contact part that is slidably pressed against the inner surface of the upper half.
以下、本考案の実施例を図面に基づいて説明す
る。
Hereinafter, embodiments of the present invention will be described based on the drawings.
尚、前記従来例と同一構成部分については同一
符号を付して説明する。 Note that the same components as those in the conventional example will be described with the same reference numerals.
第１図乃至第３図は本考案の第１実施例を示す
もので、前蓋８の一方の回動支軸２０には、先端
に開口するスリツト２１が軸方向に設けられ、該
スリツト２１に前蓋８を閉方向に付勢する前蓋ス
プリング２２が取付けられている。 1 to 3 show a first embodiment of the present invention, in which one pivot shaft 20 of the front cover 8 is provided with a slit 21 in the axial direction that opens at the tip. A front lid spring 22 is attached to the front lid spring 22 for biasing the front lid 8 in the closing direction.
前蓋スプリング２２は、所要長さに切断した板
ばね材を折曲して形成されるもので、一端にスリ
ツト２１に挿入されて係止される固定端２２ａと
回動支軸２０の係止軸部２０ａを抱持する抱持部
２２ｂとが連続形成されて固定部２２ｃとなし、
一端の抱持部２２ｂと他端２２ｄとの間に下ハー
フ３側に膨出する湾曲部を形成し、他端２２ｄを
上ハーフ２の内面に摺動可能に圧接する圧接部と
なしている。 The front lid spring 22 is formed by bending a plate spring material cut to a required length, and has a fixed end 22a that is inserted into the slit 21 and locked at one end, and a rotation support shaft 20 is locked. A holding part 22b holding the shaft part 20a is continuously formed to form a fixing part 22c,
A curved portion that bulges toward the lower half 3 is formed between the holding portion 22b at one end and the other end 22d, and the other end 22d serves as a pressure contact portion that is slidably pressed against the inner surface of the upper half 2. .
この前蓋スプリング２２が取付けられる回動支
軸２０は、スリツト２１により先端を２分割さ
れ、２分割された一方の軸部を前蓋スプリング２
２が取付けられる係止軸部２０ａとなし、該係止
軸部２０ａの先端２０ｂは、第３図に示されるよ
うに、スリツト２１側から傾斜するテーパ面２０
ｃと、このテーパ面２０ｃの上下に設けられるテ
ープ面２０ｄ，２０ｄとにより先細り状に形成さ
れている。 The pivot shaft 20 to which the front cover spring 22 is attached has its tip divided into two by a slit 21, and one of the two halves is attached to the front cover spring 2.
The tip 20b of the locking shaft 20a has a tapered surface 20 inclined from the slit 21 side, as shown in FIG.
c, and tape surfaces 20d and 20d provided above and below this tapered surface 20c form a tapered shape.
このように構成することにより、回動支軸２０
の先端側から前蓋スプリング２２の抱持部２２ｂ
を係止軸部２０ａに抱持させながら固定端２２ａ
をスリツト２１の開口側から挿通すると、前蓋ス
プリング２２が回動支軸２０に係止されるので、
取付作業が簡単になると共に、係止軸部２０ａの
先端２０ｂは先細り状に形成されているので、誤
組することなく容易に前蓋スプリング２２を回動
支軸２０に取付けられる。 With this configuration, the rotation support shaft 20
The holding portion 22b of the front lid spring 22 is
While holding the locking shaft 20a, the fixed end 22a
When inserted from the opening side of the slit 21, the front cover spring 22 is locked to the pivot shaft 20, so
The attachment work is simplified, and since the tip 20b of the locking shaft portion 20a is tapered, the front cover spring 22 can be easily attached to the pivot shaft 20 without erroneous assembly.
そして、回動支軸２０に取付けられる前蓋スプ
リング２２は、板ばねで形成されているため幅広
であることと、前蓋スプリング２２が一端の固定
部２２ｃと他端２２ｄとの間に下ハーフ３側に膨
出する湾曲部２２ｅを形成しているため、回動支
軸２０を上ハーフ２に押付ける付勢力が働き、前
蓋８と上ハーフ２とが安定して連結され、カセツ
ト組立時における前蓋８と上ハーフ２との組付け
状態が安定し、かつ組立後における前蓋８の開閉
が円滑に行われる。 The front lid spring 22 attached to the rotation support shaft 20 is formed of a plate spring and is therefore wide, and the front lid spring 22 has a lower half between the fixed part 22c at one end and the other end 22d. Since the curved portion 22e that bulges toward the third side is formed, a biasing force is exerted to press the pivot shaft 20 against the upper half 2, and the front cover 8 and the upper half 2 are stably connected, and the cassette assembly is completed. The assembled state of the front cover 8 and the upper half 2 at the time is stable, and the front cover 8 can be opened and closed smoothly after assembly.
また、第４図は本考案の別の実施例を示すもの
で、回動支軸３０の係止軸部３０ａの先端３０ｂ
は、スリツト２１側から傾斜するテーパ面３０ｃ
により先細り状に形成されており、前記実施例と
同様に前蓋スプリング２２の取付を容易にしてい
る。 Further, FIG. 4 shows another embodiment of the present invention, in which a tip 30b of a locking shaft portion 30a of a rotation support shaft 30 is shown.
is a tapered surface 30c inclined from the slit 21 side.
The front cover spring 22 is tapered to facilitate attachment of the front cover spring 22 as in the previous embodiment.
本考案は以上のように、磁気テープカセツトに
開閉可能に設けられる前蓋の回動支軸に、先端か
ら軸方向のスリツトを形成し、該スリツトにて２
分割された一方の軸部を係止軸部となし、該係止
軸部の先端を先細り状に形成すると共に、前記前
蓋スプリングを、板ばねにて一端と他端との間に
下ハーフ側に膨出する湾曲部を形成し、前記一端
に前記スリツトに挿入される固定端と前記係止軸
部を抱持する抱持部を連続形成し、前記他端を上
ハーフ内面に摺動可能に圧接する圧接部となした
ので、カセツト組立時における前蓋と上ハーフと
の組付け状態が安定し、かつ組立後における前蓋
の開閉が円滑に行われる前蓋スプリングを、誤組
することなく回動支軸に容易に取付けることがで
きる。
As described above, in the present invention, a slit is formed in the axial direction from the tip of the pivot shaft of the front cover, which is provided in a magnetic tape cassette so that it can be opened and closed, and
One of the divided shaft parts is used as a locking shaft, and the tip of the locking shaft is formed into a tapered shape, and the front lid spring is connected to a lower half between one end and the other end with a leaf spring. A curved portion that bulges out to the side is formed, a fixed end to be inserted into the slit and a holding portion for holding the locking shaft are continuously formed at the one end, and the other end is slidable on the inner surface of the upper half. Since the front cover spring is made into a press-contact part that can press against the front cover, the assembled state of the front cover and the upper half is stable when the cassette is assembled, and the front cover can be opened and closed smoothly after assembly. It can be easily attached to a rotating support shaft without any need for installation.
第１図乃至第３図は本考案の一実施例を示し、
第１図は前蓋を被着した上ハーフの要部を内面側
から見た断面背面図、第２図は要部の断面図、第
３図は回動支軸と前蓋スプリングの斜視図、第４
図は回動支軸の別の実施例を示す斜視図、第５図
及び第６図は従来例を示し、第５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６図は第５図の−断面図である。
１……磁気テープカセツト、２……上ハーフ、
３……下ハーフ、４……カセツト本体、５……磁
気テープ、８……前蓋、２０，３０……回動支
軸、２０ａ，３０ａ……係止軸部、２０ｂ，３０
ｂ……先端、２１……スリツト、２２……前蓋ス
プリング、２２ａ……固定端、２２ｂ……抱持
部、２２ｃ……固定部、２２ｄ……他端、２２ｅ
……湾曲部。
1 to 3 show an embodiment of the present invention,
Figure 1 is a cross-sectional rear view of the main parts of the upper half with the front cover attached, as seen from the inner side, Figure 2 is a cross-sectional view of the main parts, and Figure 3 is a perspective view of the pivot shaft and front cover spring. , 4th
The figure is a perspective view showing another embodiment of the rotation shaft, FIGS. 5 and 6 show a conventional example, and FIG. 5 is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side. FIG. 6 is a cross-sectional view of FIG. 5. 1... Magnetic tape cassette, 2... Upper half,
3... Lower half, 4... Cassette main body, 5... Magnetic tape, 8... Front cover, 20, 30... Rotating shaft, 20a, 30a... Locking shaft portion, 20b, 30
b...Tip, 21...Slit, 22...Front cover spring, 22a...Fixed end, 22b...Holding part, 22c...Fixing part, 22d...Other end, 22e
...Curved part.
Claims (1)
開閉可能に覆う前蓋の回動支軸に、該前蓋を閉方
向に付勢する前蓋スプリングの固定部を係止した
磁気テープカセツトにおいて、前記回動支軸に、
先端から軸方向のスリツトを形成し、該スリツト
にて２分割された一方の軸部を係止軸部となし、
該係止軸部の先端を先細り状に形成すると共に、
前記前蓋スプリングを、板ばねにて一端と他端と
の間に下ハーフ側に膨出する湾曲部を形成し、前
記一端に前記スリツトに挿入される固定端と前記
係止軸部を抱持する抱持部を連続形成し、前記他
端を上ハーフ内面に摺動可能に圧接する圧接部と
なしたことを特徴とする磁気テープカセツト。 In the magnetic tape cassette, a fixed part of a front lid spring that biases the front lid in the closing direction is locked to a pivot shaft of a front lid that opens and closes the front part of a cassette body housing a tape reel. On the rotation axis,
An axial slit is formed from the tip, and one shaft portion divided into two by the slit is used as a locking shaft portion,
The tip of the locking shaft portion is formed into a tapered shape, and
The front lid spring is formed by a plate spring, and a curved part that bulges toward the lower half is formed between one end and the other end, and the one end holds the fixed end inserted into the slit and the locking shaft part. 1. A magnetic tape cassette, characterized in that a holding part is formed continuously, and the other end serves as a press-contact part that slideably presses against the inner surface of the upper half.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987057933U JPH0544941Y2 (en) | 1987-04-16 | 1987-04-16 | |
| US07/196,222 US4951167A (en) | 1986-08-25 | 1987-08-24 | Magnetic tape cassette with improved front cover supporting mechanism |
| EP87905480A EP0287664B1 (en) | 1986-08-25 | 1987-08-24 | Cassette for magnetic tapes |
| PCT/JP1987/000624 WO1988001787A1 (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 |
|---|---|---|---|
| JP1987057933U JPH0544941Y2 (en) | 1987-04-16 | 1987-04-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63164873U JPS63164873U (en) | 1988-10-27 |
| JPH0544941Y2 true JPH0544941Y2 (en) | 1993-11-16 |
Family
ID=30888075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987057933U Expired - Lifetime JPH0544941Y2 (en) | 1986-08-25 | 1987-04-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0544941Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119680A (en) * | 1983-11-30 | 1985-06-27 | シエイプ・インコ−ポレ−テツド | Manufacture and assembly of tape cassette with dusting door and spring assembly of said dusting door |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963886U (en) * | 1982-10-21 | 1984-04-26 | ソニー株式会社 | tape cassette |
-
1987
- 1987-04-16 JP JP1987057933U patent/JPH0544941Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60119680A (en) * | 1983-11-30 | 1985-06-27 | シエイプ・インコ−ポレ−テツド | Manufacture and assembly of tape cassette with dusting door and spring assembly of said dusting door |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63164873U (en) | 1988-10-27 |
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