JP2529270B2 - Tape cassette - Google Patents
Tape cassetteInfo
- Publication number
- JP2529270B2 JP2529270B2 JP62164523A JP16452387A JP2529270B2 JP 2529270 B2 JP2529270 B2 JP 2529270B2 JP 62164523 A JP62164523 A JP 62164523A JP 16452387 A JP16452387 A JP 16452387A JP 2529270 B2 JP2529270 B2 JP 2529270B2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- boss
- tape guide
- tape cassette
- case
- 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
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、オーディオ，ビデオあるいはデータレコー
ダー等の磁気テープを収納したテープカセットに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette containing a magnetic tape such as an audio, video or data recorder.
従来の技術 従来、テープカセットには、第３図に示すようにケー
ス１の内側に取り付けたテープリール2,3間に磁気テー
プ４が張設され、この磁気テープ４を円滑に走行させた
り巻き取ったりするためのテープガイド部材5,6,7,8が
設けられている。これらのテープガイド部材のうちテー
プガイド部材7,8は主に円筒状の金属性テープガイドで
あり、第４図の断面図に示す様に上ケース9,下ケース10
に植設された上ケース側ボス（以下ボスという）9a,下
ケース側ボス（以下ボスという）10aに挿入された状態
でボス9a,10aをビス12で締付することにより、テープガ
イド11の両端が上下ケースのボス植設面9b,10bで圧縮保
持されるようになっている。2. Description of the Related Art Conventionally, in a tape cassette, a magnetic tape 4 is stretched between tape reels 2 and 3 mounted inside a case 1 as shown in FIG. 3, and the magnetic tape 4 can be smoothly run or wound. Tape guide members 5, 6, 7, 8 for removing the tape are provided. Of these tape guide members, the tape guide members 7 and 8 are mainly cylindrical metal tape guides, and as shown in the sectional view of FIG.
By tightening the bosses 9a and 10a with screws 12 while they are inserted in the upper case side boss (hereinafter referred to as boss) 9a and the lower case side boss (hereinafter referred to as boss) 10a that are planted in the tape guide 11, Both ends are compressed and held by the boss planting surfaces 9b and 10b of the upper and lower cases.
発明が解決しようとする問題点 しかしながら、このような従来の構成のテープカセッ
トでは、第４図に示す様にテープガイド圧締保持される
ためにテープガイド全高Ｈを上下ボス高さの和（l1＋
l2）と上下ボス間スキマS1の和以上、すなわちＨ≧（l1
＋l2）＋S1とする必要があるが、上下ボス間スキマS1が
ある量以上になればビス締付時にビスバカや上ケース側
ボス割れなどが発生していた。また、Ｈ＜（l1＋l2）と
なる構成となった場合、第５図に示す様にテープガイド
が上下ケースに完全には締付保持されずに上下ケース9,
10間にスキマS2が生じ、テープガイドがガタついたり、
回転したりし、走行中にテープしわが生じドロップアウ
トの増加あるいは、オーディオレベル変動の増加等画・
音質の劣化が生じるという問題点が発生していた。一
方、前述した寸法を管理するためには、各部品寸法H,
l1,l2を高精度で仕上げ、且つバラツキを極力押えなけ
ればならず、量産効率を著しく低下させる要因となって
いた。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, in such a conventional tape cassette, as shown in FIG. 4, since the tape guide is clamped and held, the total height H of the tape guide is the sum of the heights (l) of the upper and lower bosses. 1 +
l 2 ) and the gap between the upper and lower bosses S 1 or more, that is, H ≧ (l 1
It is necessary to set + l 2 ) + S 1 , but if the gap S 1 between the upper and lower bosses exceeds a certain amount, screw studs and boss cracks on the upper case side occurred when tightening the screws. In the case of H <(l 1 + l 2 ), as shown in FIG. 5, the tape guide is not completely tightened and held in the upper and lower cases 9,
Clearance S 2 occurs between 10 and the tape guide rattles,
When rotating, tape wrinkles occur during driving and dropout increases, or audio level fluctuation increases.
There was a problem that the sound quality deteriorates. On the other hand, in order to manage the above-mentioned dimensions, each component dimension H,
It was necessary to finish l 1 and l 2 with high accuracy and suppress variations as much as possible, which was a factor that markedly reduced mass production efficiency.
本発明は各部品の寸法を一般許容公差レベルで構成し
ても安定、且つ、高精度に保持できるテープガイドを具
備したテープカセットを提供せんとするものである。The present invention provides a tape cassette provided with a tape guide that is stable and can be held with high precision even if the dimensions of each component are configured to a general tolerance level.
問題点を解決するための手段 上記問題点を解決するために本発明のテープカセット
は、テープガイドを内側から規制するボス根元部の両
方、もしくは、どちらか一方側のテープガイド側部対向
面に放射状のリブを設け、この放射状リブによってテー
プガイド側面を受けるようにしたものである。Means for Solving the Problems In order to solve the above problems, the tape cassette of the present invention is provided on both sides of the boss root portion that regulates the tape guide from the inside, or on either side of the tape guide side portion facing surface. Radial ribs are provided, and the side surfaces of the tape guide are received by the radial ribs.
作用 本発明の上述した構成によって、従来発生していた問
題点が解決された。Action The above-described configuration of the present invention has solved the problems that have conventionally occurred.
すなわち、従来と同じようにビス締めを行うことによ
りテープガイドは、テープガイド側部が放射状リブに食
い込んでいくことにより保持され、最終的なビス締付け
力は、上下両ボスの突き合わせ面が完全に当接された後
に到達することになる。That is, the tape guide is held by the side of the tape guide biting into the radial rib by performing the screw tightening as in the conventional method, and the final screw tightening force is such that the abutting surfaces of the upper and lower bosses are completely It will arrive after being abutted.
この結果各部品寸法（H,l1,l2）を、高精度で且つ、
バラツキを少なくすることができ、管理を行わなくても
従来のようなネジバカがボス割れあるいは、テープガイ
ドが傾いたり回転したりといったことがなくなり、安全
なビス締めが行なえ、かつテープガイドをカセットへ安
定に保持させることができるのである。As a result, the dimensions of each part (H, l 1 , l 2 ) are calculated with high accuracy and
Variations can be reduced, and without the need for management, screw boss cracks or tape guide tilt or rotation, unlike in the past, can be prevented, safe screw tightening can be performed, and the tape guide can be transferred to the cassette. It can be held stably.
実 施 例 以下、本発明の一実施例を添付図面に基づいて説明す
る。第１図および第２図は本実施例の斜視図および組み
合わせ状態を示す断面図である。Example Hereinafter, an example of the present invention will be described with reference to the accompanying drawings. 1 and 2 are a perspective view and a sectional view showing a combined state of this embodiment.
第２図において、15はテープガイドで、下ケース14に
植設された下側ボス14aと上ケース13に植設された上側
ボス13aに挿入された状態で上側ボス13a,下側ボス14aを
ビス16で締付していくわけであるが、本実施例によれ
ば、上ケース13には、植設される上側ボス13aの根元の
テープガイド15の側部対向面13cに放射状リブ13bが設け
られている。従ってビス締めを行っていく過程の中で、
テープガイド15はその側部が放射状リブ13bに食い込ん
でいくことにより保持される。さらにビス締めは行わ
れ、上側ボス13a,下側ボス14aの先端が完全に当接され
た後に所定のビス締め力に到達することになりボス割れ
やネジバカなど発生させずにビス締めを行なえることに
なる。In FIG. 2, reference numeral 15 denotes a tape guide, which is inserted into the lower boss 14a planted in the lower case 14 and the upper boss 13a planted in the upper case 13, and which has the upper boss 13a and the lower boss 14a inserted therein. According to the present embodiment, the upper case 13 is provided with radial ribs 13b on the side facing surface 13c of the tape guide 15 at the base of the upper boss 13a to be planted. It is provided. Therefore, in the process of tightening the screws,
The tape guide 15 is held by its side portions biting into the radial ribs 13b. Further, screw tightening is performed, and after the tips of the upper boss 13a and the lower boss 14a are completely abutted, a predetermined screw tightening force is reached, and screw tightening can be performed without causing boss cracks or screw backlash. It will be.
尚、本実施例では、放射状リブ13bは３ケ所設けた
が、４ケ所,5ケ所等他の個数設けても良いことはいうま
でもない。In this embodiment, the radial ribs 13b are provided at three places, but it goes without saying that other numbers such as four places and five places may be provided.
発明の効果 以上の様に本発明は、上下両ケースに植設されたボス
根元部のテープガイド側部対向面に複数本のリブを放射
状に、ほぼ等間隔で上下両ケースもしくはどちらか一方
のケースに設けテープガイド側部をこの放射状リブで受
けるように構成することで、ビス締め力のバラツキや各
部品寸法を高精度に設定、管理を行なわなくても、一般
的に得られる寸法精度の部品構成で、ボス割れやビスバ
カ，テープガイドの傾き，ガタの生じない信頼性の高
い、且つ量産効率の極めて優れたテープカセットを提供
でき、その効果は、きわめて大きいものがある。EFFECTS OF THE INVENTION As described above, according to the present invention, a plurality of ribs are radially disposed on the tape guide side facing surface of the boss roots planted in the upper and lower cases, and the upper and lower cases or either one of them are arranged at substantially equal intervals. By configuring the tape guide side part to be received by this radial rib on the case, it is possible to obtain the dimensional accuracy that is generally obtained without varying the screw tightening force or setting and managing each part dimension with high accuracy. With a component structure, it is possible to provide a highly reliable tape cassette that is free from boss cracks, screw burrs, tape guide tilt, and backlash, and is extremely effective in mass production. The effect is extremely large.
第１図は本発明の一実施例におけるテープカセットの上
ケースに設けた放射状リブを表わす要部斜視図、第２図
は同組立た状態の構成を示す要部断面図、第３図は従来
のテープカセットの構成を示す概略平面図、第４図，第
５図は従来構成を示す要部断面図である。 13……上ケース、13a……上側ボス、13b……放射状リ
ブ、13c……テープガイド側部対向面、14……下ケー
ス、14a……下側ボス、14b……テープガイド側部対向
面、15……テープガイド。FIG. 1 is a perspective view of an essential part showing a radial rib provided on an upper case of a tape cassette according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of an essential part showing the structure in the assembled state, and FIG. FIG. 4 is a schematic plan view showing the structure of the tape cassette, and FIGS. 4 and 5 are cross-sectional views showing the main part of the conventional structure. 13 …… Upper case, 13a …… Upper boss, 13b …… Radial rib, 13c …… Tape guide side facing surface, 14 …… Lower case, 14a …… Lower boss, 14b …… Tape guide side facing surface , 15 …… Tape guide.
Claims (1)
側から規制するボスをそれぞれ植設すると共に、前記上
ケースと前記下ケースの両方もしくは、どちらか一方側
の前記ボス根元部の前記テープガイド側部対向面に複数
本のリブを放射状に、ほぼ等間隔で配置し、前記放射状
リブによって前記テープガイド側面を受ける様にしたこ
とを特徴とするテープカセット。1. A boss for restricting a tape guide from the inside is planted in each of the upper case and the lower case, and the tape at the root portion of the boss on either or both of the upper case and the lower case. A tape cassette, characterized in that a plurality of ribs are radially arranged on a surface facing the guide side portion at substantially equal intervals, and the radial ribs receive the side surfaces of the tape guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164523A JP2529270B2 (en) | 1987-07-01 | 1987-07-01 | Tape cassette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62164523A JP2529270B2 (en) | 1987-07-01 | 1987-07-01 | Tape cassette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6410479A JPS6410479A (en) | 1989-01-13 |
| JP2529270B2 true JP2529270B2 (en) | 1996-08-28 |
Family
ID=15794781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62164523A Expired - Lifetime JP2529270B2 (en) | 1987-07-01 | 1987-07-01 | Tape cassette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2529270B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05234319A (en) * | 1992-02-18 | 1993-09-10 | Sony Corp | Tape cassette |
| EP0568060A3 (en) * | 1992-05-01 | 1994-12-21 | Minnesota Mining & Mfg | Cassette screw bosses having ribbed surfaces. |
-
1987
- 1987-07-01 JP JP62164523A patent/JP2529270B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6410479A (en) | 1989-01-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080614 Year of fee payment: 12 |