JPH056611Y2 - - Google Patents

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Publication number
JPH056611Y2
JPH056611Y2 JP15106286U JP15106286U JPH056611Y2 JP H056611 Y2 JPH056611 Y2 JP H056611Y2 JP 15106286 U JP15106286 U JP 15106286U JP 15106286 U JP15106286 U JP 15106286U JP H056611 Y2 JPH056611 Y2 JP H056611Y2
Authority
JP
Japan
Prior art keywords
spring
front cover
slit
magnetic tape
fixed end
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
Application number
JP15106286U
Other languages
Japanese (ja)
Other versions
JPS6358379U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP15106286U priority Critical patent/JPH056611Y2/ja
Publication of JPS6358379U publication Critical patent/JPS6358379U/ja
Application granted granted Critical
Publication of JPH056611Y2 publication Critical patent/JPH056611Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
ツト本体の前部に被着された前蓋を付勢する前蓋
スプリングに関する。
[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic tape cassette used in a VTR (video tape recorder), etc., and particularly to a magnetic tape cassette with a front cover attached to the front of the cassette body. Regarding the front cover spring.

〔従来の技術〕[Conventional technology]

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被着
され、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 have 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, and this front cover is kept closed at all times by a front cover spring. biased in the direction.

第8図及び第9図は、この種の磁気テープカセ
ツトを示し、第8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9図に第
8図の−断面図を示す。
8 and 9 show this type of magnetic tape cassette, FIG. 8 is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side, and FIG. 9 is a cross-sectional view of the magnetic tape cassette in FIG. Show the diagram.

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を開閉可能に覆う前蓋8が被着されてい
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
At the front part of the
A front cover 8 is attached to cover the magnetic tape 5 running on the front surface of the tape guide portions 4a, 4a in an openable and closable manner.

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の内側に突設
した回動支軸9,10を、上ハーフ2の側壁2
a,2aの前部側に軸支して取付けられるもの
で、長軸の回動支軸9には、前蓋8を閉方向に付
勢する前蓋スプリング11が装着されている。
The front lid 8 has side plates 8c, 8c extending on both sides of the front plate 8a and the top plate 8b, and the pivot shafts 9, 10 protruding inside the side plates 8c are connected to the side walls of the upper half 2.
The front cover spring 11 is attached to the long rotation support shaft 9 to bias the front cover 8 in the closing 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を回動支軸
9に外嵌して、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
付けられる。
The front lid spring 11 is formed by bending a wire spring material, and has a coil portion 11a fitted onto the rotation support shaft 9, and a fixed end 11b protruding from the support shaft 9. It is attached to the pin 12 and the free end 11c is loosely fitted into a guide groove 13 formed on the inner surface of the upper half 2.

そして、前蓋スプリング11を装着した前蓋8
は、上ハーフ2の一方の側壁2aに形成した装着
凹部14に回動支軸9を支持し、回動支軸10を
他方の側壁2aの軸孔に軸支して上ハーフ2に仮
止めされ、両ハーフ2,3をビス15で螺着して
カセツト本体4を構成したのち、前蓋スプリング
11のトーシヨン力によつて、前蓋8が常時閉方
向に付勢される。
The front lid 8 with the front lid spring 11 attached thereto
The rotation support shaft 9 is supported in the mounting recess 14 formed in one side wall 2a of the upper half 2, and the rotation support shaft 10 is supported in the shaft hole of the other side wall 2a and temporarily fixed to the upper half 2. After the two halves 2 and 3 are screwed together with screws 15 to form the cassette body 4, the front lid 8 is normally biased in the closing direction by the torsion force of the front lid spring 11.

〔考案が解決しようとする問題点〕[Problem that the invention attempts to solve]

しかしながら上述の前蓋スプリングでは、形状
が特異であることから、割高な外注品となつてコ
スト的に不利であり、また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
するため、取付けが面倒であつた。
However, since the above-mentioned front cover spring has a unique shape, it is a relatively expensive outsourced product, which is disadvantageous in terms of cost.Also, in order to provide torsion force in the coil part, the coil part is inserted into the pivot shaft. Attachment was troublesome because it required two operations: one to rotate the coil portion, and another to rotate the fixed end to lock the fixed end to the locking pin.

本考案は、かかる実情を背景にしてなされたも
ので、前蓋スプリングを廉価で容易に形成でき、
また回動支軸への取付けを脱落なく簡単且つ確実
に行なえ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。
The present invention was developed against the background of such circumstances, and allows the front lid spring to be formed easily at low cost.
Another object of the present invention is to provide a magnetic tape cassette that can be easily and reliably attached to a rotating support shaft without falling off.

〔問題点を解決するための手段〕[Means for solving problems]

本考案は、上述の目的を達成するため、上ハー
フと下ハーフからなる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、該前蓋を閉方向に
付勢する前蓋スプリングの固定端を係止した磁気
テープカセツトにおいて、前記回動支軸に断面テ
ーパ状のスリツトを軸方向に設け、一方前記前蓋
スプリングを板ばねで形成して、上記スリツトに
挿通される固定端に該スリツトと係合する抜け止
め部を設けたことを特徴とするものである。
In order to achieve the above-mentioned object, the present invention provides a front cover that biases the front cover in the closing direction on a pivot shaft of the front cover that covers the front part of the cassette main body consisting of an upper half and a lower half so that it can be opened and closed. In a magnetic tape cassette in which a fixed end of a spring is locked, a slit with a tapered cross section is provided in the axial direction on the rotation support shaft, and the front cover spring is formed of a leaf spring, and the fixed end is inserted through the slit. It is characterized in that a retaining portion that engages with the slit is provided at the end.

〔実施例〕〔Example〕

以下、本考案の各実施例を図面に基づいて説明
する。
Hereinafter, each embodiment of the present invention will be described based on the drawings.

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.

第1図及び第2図は第1実施例を示すもので、
上ハーフ2の前部に取付けられる前蓋8は、装着
凹部14に係止される一方の回動支軸20に、該
支軸20の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に前蓋スプリング2
2が装着されている。
1 and 2 show the first embodiment,
The front cover 8 attached to the front part of the upper half 2 has a slit 21 in the axial direction that opens at the tip of the pivot shaft 20 that is locked in the mounting recess 14. Front cover spring 2 in slit 21
2 is installed.

上記前蓋スプリング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、固定端
22aに回動支軸20の略半周を抱持する抱持部
22bが連設され、抱持部22bと自由端側の先
端22cとの間に、ループ状のスプリング部22
dが形成されており、固定端22aには、端部を
湾曲状に折り返し形成した抜け止め部23が設け
られている。
The front lid spring 22 is formed by bending a plate spring material cut to a required length, and a holding portion 22b that holds approximately half the circumference of the rotation support shaft 20 is connected to the fixed end 22a. A loop-shaped spring portion 22 is provided between the holding portion 22b and the free end side tip 22c.
d is formed, and the fixed end 22a is provided with a retaining portion 23 whose end portion is folded back into a curved shape.

前蓋スプリング22を装着するスリツト21は
断面両テーパ状に形成され、その小開口21a
は、固定端22aが挿通可能で抜け止め部23よ
り狭く、また大開口21bは固定端22aよりも
広く形成されている。
The slit 21 into which the front cover spring 22 is attached is formed to have a tapered shape on both sides, and its small opening 21a
The fixed end 22a is insertable and narrower than the retaining portion 23, and the large opening 21b is formed wider than the fixed end 22a.

そして、前蓋スプリング22の抱持部22bを
回動支軸20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、該固定端
22aは抜け止め部23が弾発力にてスリツト2
1のテーパ面に圧接して係止さて、これにより前
蓋スプリング22は、自由端側への緩みとスリツ
ト21の開口側への抜けが防止される。
Then, when the fixed end 22a is inserted from the opening side of the slit 21 while the holding part 22b of the front cover spring 22 is held by the rotation support shaft 20, the retaining part 23 of the fixed end 22a is held by the elastic force. Te slit 2
The front cover spring 22 is thus prevented from loosening toward the free end and from coming off toward the opening of the slit 21.

また前蓋8を上ハーフ2に仮止めした際には、
自由端側の先端22cが上ハーフ2のストツパ凹
部24に係止され、前蓋スプリング22が上ハー
フ2に圧接支持される。
Also, when the front lid 8 is temporarily attached to the upper half 2,
The free end side tip 22c is locked in the stopper recess 24 of the upper half 2, and the front lid spring 22 is supported by the upper half 2 in pressure contact.

前蓋スプリング22の取付け部と対向する下ハ
ーフ3の隅部には、前蓋係止用の前蓋係止部材2
5が、上部両側の支軸25a,25aを下ハーフ
3のリブ3a,3aに回動可能に吊持されてお
り、該前蓋係止部材25には、前蓋スプリング2
2のスプリング部22dに押動される回動用の突
片25bと、下ハーフ3の側壁から外部に突出す
るロツク用突起及び解除用突起とが設けられ、前
蓋8がロツク用突起と係合して閉状態が保持され
るもので、VTRの作用爪が解除用突起を押動し
て係合状態が解除される。
At the corner of the lower half 3 facing the attachment part of the front lid spring 22, there is a front lid locking member 2 for locking the front lid.
5 is rotatably suspended from the ribs 3a, 3a of the lower half 3 by supporting shafts 25a, 25a on both upper sides, and the front lid locking member 25 has a front lid spring 2.
A rotating protrusion 25b pushed by the spring portion 22d of the lower half 3, and a locking protrusion and a release protrusion protruding outward from the side wall of the lower half 3 are provided, and the front cover 8 engages with the locking protrusion. The closed state is maintained, and the engaged state is released by the action pawl of the VTR pushing the release protrusion.

そして、以上のように構成された磁気テープカ
セツト1をVTRに装着して前蓋8が開かれると、
前蓋スプリング22を係止した回動支軸20は第
3図において時計方向に回動し、先端22cがス
トツパ凹部24に係止されたまま、前蓋スプリン
グ22が回動支軸20に巻き込まれ、スプリング
部22dのループ形状が上方に小さく後退して前
蓋係止部材25の突片25bから離間する。
When the magnetic tape cassette 1 configured as described above is attached to the VTR and the front cover 8 is opened,
The pivot shaft 20 that locks the front lid spring 22 rotates clockwise in FIG. As a result, the loop shape of the spring portion 22d recedes upward and separates from the protruding piece 25b of the front lid locking member 25.

また磁気テープカセツト1をVTRから取り出
しして、前蓋8の開状態が解除されると、下方へ
脹らむ前蓋スプリング22のスプリング部22d
の復元力により、回動支軸20が第3図の反時計
方向に回動され、スプリング部22dが前蓋係止
部材25の突片25bを押動して、前蓋8が閉位
置に付勢される。
When the magnetic tape cassette 1 is removed from the VTR and the front cover 8 is released from the open state, the spring portion 22d of the front cover spring 22 expands downward.
Due to the restoring force, the rotation support shaft 20 is rotated in the counterclockwise direction in FIG. energized.

上記前蓋8の開閉作動では、回動支軸20の回
動に伴つて、前蓋スプリング22の固定端22a
と抱持部22b及び抜け止め部23とが連動する
から、前蓋スプリング22に開閉による緩みを生
じることがない。
In the opening/closing operation of the front lid 8, as the rotation support shaft 20 rotates, the fixed end 22a of the front lid spring 22
Since the holding part 22b and the retaining part 23 are interlocked with each other, the front lid spring 22 is not loosened due to opening and closing.

第4図は本考案の第2実施例を示し、回動支軸
20に設けられるスリツト26を、固定端22a
の抜け止め部23より幅狭の小開口26aと幅広
の大開口26bを有する断面片テーパ状に形成し
たもので、前蓋スプリング22は上記実施例と同
様にスリツト26に、挿通するだけでワンタツチ
で確実に係止することができる。
FIG. 4 shows a second embodiment of the present invention, in which the slit 26 provided in the rotation support shaft 20 is inserted into the fixed end 22a.
The front cover spring 22 is formed in a tapered cross-section with a small opening 26a narrower than the retaining part 23 and a large opening 26b wider than the retaining part 23, and the front cover spring 22 can be inserted into the slit 26 with one touch as in the above embodiment. It can be securely locked.

また第5図乃至第7図は本考案の第3、第4、
及び第5実施例で、各実施例とも回動支軸20に
は、上記第1実施例に示した両テーパ状のスリツ
ト21が用いられ、第5図の第3実施例では、前
蓋スプリング22の固定端22aの端部を蛇腹状
に折曲して抜け止め部27となし、第6図の第4
実施例では、固定端22aの端部に小球を固着し
て抜け止め部28を形成し、また第7図の第5実
施例では、固定端22aの端部を折曲して形成し
た舌片を抜け止め部29となしたもので、これら
各実施例においても、上記第1及び第2実施例と
同様の効果を奏する。
In addition, FIGS. 5 to 7 show the third, fourth, and
In each of the embodiments, the double tapered slit 21 shown in the first embodiment is used for the pivot shaft 20, and in the third embodiment shown in FIG. The end of the fixed end 22a of 22 is bent into a bellows shape to form a retaining part 27.
In the embodiment, a small ball is fixed to the end of the fixed end 22a to form the retaining part 28, and in the fifth embodiment shown in FIG. 7, a tongue is formed by bending the end of the fixed end 22a. The piece serves as a retaining portion 29, and in each of these embodiments, the same effects as in the first and second embodiments are achieved.

尚、本考案の抜け止め部は、上記各実施例に示
した形状のみに限定するものでなく、また両テー
パ或いは片テーパのスリツトとの組合わせも自由
である。
The retaining portion of the present invention is not limited to the shapes shown in the above embodiments, and may be freely combined with a double taper or single taper slit.

〔考案の効果〕[Effect of idea]

本考案の磁気テープカセツトは以上説明したよ
うに、カセツト本体の前部を開閉可能に覆う前蓋
の回動支軸に断面テーパ状のスリツトを軸方向に
設け、該スリツトに係止される前蓋スプリングを
板ばねで形成して、その固定端に該スリツトと係
合する抜け止め部を設けたので、従来の如くコス
ト高なつる巻き状のスプリングを用いることな
く、板ばね材を所要長さに切断して曲げ加工する
のみで容易に形成でき、これにより仕掛かりコス
トを低減できてコストダウンが図れる。
As explained above, the magnetic tape cassette of the present invention has a slit with a tapered cross section in the axial direction on the pivot shaft of the front cover that covers the front part of the cassette body so that it can be opened and closed. The lid spring is made of a leaf spring, and the fixed end is provided with a retaining part that engages with the slit, so the leaf spring material can be made to the required length without using a costly helical spring as in the past. It can be easily formed by simply cutting and bending, thereby reducing in-process costs and reducing costs.

また、前蓋スプリングの取付けをワンタツチで
容易に行なえると共に、係止状態を脱落なく確実
に保持することができる。
Further, the front cover spring can be easily attached with one touch, and the locked state can be reliably maintained without falling off.

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

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図は第1図の−断
面図、第3図は第2図の要部拡大断面図、第4図
は第2実施例を示す要部拡大断面図、第5図は第
3実施例を示す要部拡大断面図、第6図は第4実
施例を示す要部拡大断面図、第7図は第5実施例
を示す要部拡大断面図、第8図及び第9図は従来
例を示し、第8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9図は第8図
の−断面図である。 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
……回動支軸、21……スリツト、21a……小
開口、21b……大開口、22……前蓋スプリン
グ、22a……固定端、23,27,28,29
……抜け止め部。
1 to 3 show an embodiment of the present invention,
Figure 1 is a cross-sectional rear view of the main part of the upper half with the front cover attached, seen from the inner side, Figure 2 is a - sectional view of Figure 1, and Figure 3 is an enlarged cross-sectional view of the main part of Figure 2. , FIG. 4 is an enlarged sectional view of the main part showing the second embodiment, FIG. 5 is an enlarged sectional view of the main part showing the third embodiment, FIG. 6 is an enlarged sectional view of the main part showing the fourth embodiment, and FIG. 7 is an enlarged sectional view of the main part showing the fifth embodiment, FIGS. 8 and 9 show the conventional example, FIG. 8 is a partially cutaway rear view of the magnetic tape cassette seen from the lower half side, and FIG. FIG. 9 is a cross-sectional view of FIG. 8. 2... Upper half, 3... Lower half, 4... Cassette body, 5... Magnetic tape, 8... Front cover, 20
...Rotation shaft, 21...Slit, 21a...Small opening, 21b...Large opening, 22...Front lid spring, 22a...Fixed end, 23, 27, 28, 29
...Keeping part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上ハーフと下ハーフからなるカセツト本体の前
部を開閉可能に覆う前蓋の回動支軸に、該前蓋を
閉方向に付勢する前蓋スプリングの固定端を係止
した磁気テープカセツトにおいて、前記回動支軸
に断面テーパ状のスリツトを軸方向に設け、一方
前記前蓋スプリングを板ばねで形成して、上記ス
リツトに挿通される固定端に該スリツトと係合す
る抜け止め部を設けたことを特徴とする磁気テー
プカセツト。
In a magnetic tape cassette, a fixed end of a front cover spring that biases the front cover in the closing direction is locked to a pivot shaft of a front cover that covers the front part of the cassette body consisting of an upper half and a lower half so that it can be opened and closed. , a slit having a tapered cross section is provided in the axial direction on the pivot shaft, the front lid spring is formed of a plate spring, and a retaining portion that engages with the slit is provided at the fixed end inserted through the slit. A magnetic tape cassette characterized by:
JP15106286U 1986-10-01 1986-10-01 Expired - Lifetime JPH056611Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15106286U JPH056611Y2 (en) 1986-10-01 1986-10-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15106286U JPH056611Y2 (en) 1986-10-01 1986-10-01

Publications (2)

Publication Number Publication Date
JPS6358379U JPS6358379U (en) 1988-04-19
JPH056611Y2 true JPH056611Y2 (en) 1993-02-19

Family

ID=31067782

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15106286U Expired - Lifetime JPH056611Y2 (en) 1986-10-01 1986-10-01

Country Status (1)

Country Link
JP (1) JPH056611Y2 (en)

Also Published As

Publication number Publication date
JPS6358379U (en) 1988-04-19

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JPH0544940Y2 (en)
JPH0115040Y2 (en)
JPH0525103Y2 (en)
JPH0514382Y2 (en)
JPH0247032B2 (en)
JPH0452867Y2 (en)
JPH0514386Y2 (en)
JPH0413802Y2 (en)
JPH0418143Y2 (en)
JPS6017114Y2 (en) tape cassette
JPH0422450Y2 (en)
JPH0525101Y2 (en)
JPS6312467Y2 (en)
JPH0544946Y2 (en)
JPS6316070Y2 (en)