JPS6260754B2 - - Google Patents
Info
- Publication number
- JPS6260754B2 JPS6260754B2 JP57046577A JP4657782A JPS6260754B2 JP S6260754 B2 JPS6260754 B2 JP S6260754B2 JP 57046577 A JP57046577 A JP 57046577A JP 4657782 A JP4657782 A JP 4657782A JP S6260754 B2 JPS6260754 B2 JP S6260754B2
- Authority
- JP
- Japan
- Prior art keywords
- hub
- outer ring
- notch
- ring
- 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
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/037—Single reels or spools
Description
【発明の詳細な説明】
本発明は、合成樹脂製のカセツトテープ用ハブ
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a hub for a cassette tape made of synthetic resin.
従来のカセツトテープ用ハブは、例えば第１図
に示した如く、内周面に所定の数の駆動用爪１が
設けられた内輪２と、弧状のリブ３を介して内輪
２の外側に支持され且つ所定位置にテープ止め用
切欠き部４が設けられた外輪５とが樹脂成形によ
り一体成形され、該切欠き部４に圧入せしめられ
得るテープ止め片６が上記部分とは別に樹脂等に
より形成されていて、切欠き部４にテープ７の端
部８を挿入した上で、止め片６を圧入することに
より該端部８を固定し、更に外輪５の外周面９に
テープ７を巻回せしめるように構成されていた。
しかしながら、このようなカセツトテープ用ハブ
は、テープ止め片６がハブと別体となつているの
で、テープ止め片を圧入した際、テープ止め片６
の外周面とハブの外周面との間に段差が生じて、
真円度が低いという欠点があつた。又、部品点数
が多く組立作業が面倒であるという欠点があつ
た。 A conventional cassette tape hub, for example, as shown in FIG. The outer ring 5 is integrally molded with resin and has a tape fixing notch 4 provided at a predetermined position, and a tape fixing piece 6 that can be press-fitted into the notch 4 is made of resin or the like separately from the above part. After inserting the end 8 of the tape 7 into the notch 4, the end 8 is fixed by press-fitting the stopper piece 6, and then the tape 7 is wrapped around the outer peripheral surface 9 of the outer ring 5. It was designed to be rotated.
However, in such a cassette tape hub, the tape fixing piece 6 is separate from the hub, so when the tape fixing piece 6 is press-fitted, the tape fixing piece 6
There is a difference in level between the outer circumferential surface of the hub and the outer circumferential surface of the hub.
The drawback was that the roundness was low. Further, there was a drawback that the number of parts was large and assembly work was troublesome.
本発明は、上記欠点を解消する目的でなされた
ものであり、駆動用爪が内周面に設けられている
内輪と、該内輪に連結され、磁気テープが外周面
に巻回される外輪と、該外輪に形成されており、
係合片の圧入を介して上記磁気テープを係止する
切欠き部とから成る合成樹脂製のカセツトテープ
用ハブにおいて、上記係合片は、内輪から分割さ
れ揺動できる外輪の先端に設けられており、該外
輪の支承基部は上記切欠き部と対向する位置に形
成されていることを特徴とする。 The present invention was made for the purpose of solving the above-mentioned drawbacks, and includes an inner ring having driving claws provided on the inner circumferential surface, and an outer ring connected to the inner ring and having a magnetic tape wound around the outer circumferential surface. , formed on the outer ring,
In the hub for a cassette tape made of synthetic resin and comprising a notch portion that locks the magnetic tape through press-fitting of an engaging piece, the engaging piece is provided at the tip of an outer ring that is split from the inner ring and can swing. The bearing base of the outer ring is formed at a position facing the notch.
以下、第２図に示した実施例に基づきこれを説
明する。１０１は合成樹脂で射出成形されたカセ
ツトテープ用のハブである。該ハブ１０１は、内
周面に駆動用爪１１が、外周面にリブ１３が夫々
放射状に設けられている内輪１２と、該内輪１２
の外周面に設けられた支承基部１４ｂを介して連
結され、外周面１４ａに磁気テープ１７が巻回さ
れる外輪１４，１４′と、該一方の外輪１４の先
端に形成され、上記磁気テープ１７の端部１８が
挿入される切欠き部１６と、上記他方の外輪１
４′の先端に形成され、上記切欠き部１６に圧入
する係合片１５とで構成されている。 This will be explained below based on the embodiment shown in FIG. 101 is a hub for a cassette tape made of injection molded synthetic resin. The hub 101 includes an inner ring 12 having drive pawls 11 on the inner circumferential surface and ribs 13 on the outer circumferential surface, and an inner ring 12.
The outer rings 14 and 14' are connected via a support base 14b provided on the outer peripheral surface of the outer rings 14 and 14', and the magnetic tape 17 is wound around the outer peripheral surface 14a. a notch 16 into which the end 18 of the other outer ring 1 is inserted;
4', and an engaging piece 15 that is press-fitted into the notch 16.
前記支承基部１４ｂは上記切欠き部１６と対向
する位置、例えば、上記切欠き部１６と180度に
形成されている。 The support base 14b is formed at a position facing the notch 16, for example, at 180 degrees with the notch 16.
前記係合片１５はその根元により幅狭に形成さ
れた可撓性連結部１５ａが設けられており、上記
切欠き部１６の奥部１６ａへ圧入し易く成つてい
る。 The engaging piece 15 is provided with a narrow flexible connecting part 15a at its base, and can be easily press-fitted into the deep part 16a of the notch 16.
前記外輪１４，１４′はその外形幅が均一に形
成されている。従つて、射出成形後に生じるひけ
は、均等で真円度が高くなる。次に上記ハブ１０
１による磁気テープの係止操作について説明す
る。テープ１７の端部１８を切欠き部１６内に挿
入した後、係合片１５を左方向に旋回せしめ切欠
き部１６内に圧入する。圧入後、係合片１５は切
欠き部１６の奥部１６ａに掛かつて抜けなくな
り、磁気テープ１７はその端部１８が係合片１５
と切欠き部１６との間に挟み付けられて固定され
る。又、外輪１４，１４′相互の接続が行われる
ことにより、ハブ１０１の外形が円形に形成され
る。この場合、ハブ１０１の外形は単一の合わせ
面Ａのみで形成されると共に、外輪１４，１４′
のみで形成されるので従来のように段差はなくな
り真円度が高まる。 The outer rings 14, 14' have uniform outer widths. Therefore, the sink marks that occur after injection molding are uniform and have a high degree of roundness. Next, the hub 10
The magnetic tape locking operation according to No. 1 will be explained. After inserting the end 18 of the tape 17 into the notch 16, the engaging piece 15 is turned leftward and press-fitted into the notch 16. After press-fitting, the engaging piece 15 hooks into the inner part 16a of the notch 16 and cannot be removed, and the magnetic tape 17 has its end 18 attached to the engaging piece 15.
and the notch 16 and are fixed. Further, by connecting the outer rings 14 and 14' to each other, the outer shape of the hub 101 is formed into a circular shape. In this case, the outer shape of the hub 101 is formed by only a single mating surface A, and the outer rings 14, 14'
Since it is formed by chisel, there is no difference in level as in the conventional method and the roundness is improved.
第３図は本カセツトテープ用ハブの第二実施例
を示しており、このハブ１０２は一方の外輪１４
と内輪１２とをリブ１３を介して一体成形し成る
ものである。該リブ１３は幅狭に形成されてお
り、これにより幅広の肉抜き部１９が形成されて
いる。 FIG. 3 shows a second embodiment of the present cassette tape hub, in which the hub 102 is attached to one outer ring 14.
and an inner ring 12 are integrally molded via ribs 13. The rib 13 is formed narrowly, thereby forming a wide hollowed out portion 19.
第４図は同じくハブ１０３の第三実施例を示し
ており、一方の外輪１４が内輪１２と連結形成さ
れていると共に、切欠き部１６が上記外輪１４に
形成されたものである。又、放射状のリブ１３に
代えて、一部が肉抜きされた弧状のリブ１３′を
設けたものである。 FIG. 4 similarly shows a third embodiment of the hub 103 , in which one outer ring 14 is connected to the inner ring 12 and a notch 16 is formed in the outer ring 14. Further, instead of the radial ribs 13, arcuate ribs 13' with a portion of the material cut out are provided.
第５図は同じくハブ１０４の第四実施例を示し
ており、弧状のリブ１３″を左右夫々に設けると
共に、外輪１４，１４′夫々がリブ１３″，１３″
から分離していて揺動可能なものである。 FIG. 5 similarly shows a fourth embodiment of the hub 104 , in which arcuate ribs 13'' are provided on the left and right sides, and outer rings 14, 14' are provided with ribs 13'', 13'', respectively.
It is separate from the main body and can be swung.
本発明のカセツトテープ用ハブは、駆動用爪が
内周面に設けられている内輪と、該内輪に連結さ
れ、磁気テープが外周面に巻回される外輪と、該
外輪に形成されており、係合片の圧入を介して上
記磁気テープを係止する切欠き部とから成る合成
樹脂製のカセツトテープ用ハブにおいて、上記係
合片は内輪から分割され、揺動できる外輪の先端
に設けられており、該外輪の支承基部は上記切欠
き部と対向する位置に形成されているから、外輪
は上記支承基部１４′を中心として揺動可能であ
る。従つて、本発明によれば、係合片を切欠き部
に圧入し易く、組立作業が容易となる。又、ハブ
の外形は外輪相互を合わせることにより形成され
るので、従来のように段差が生じることなく、真
円度が高くなる利点がある。更に、テープ固定機
能を有する係合片１５がハブと一体になつている
ので、部品点数が減少する。加えて、射出成形時
肉厚の異なる部分である外輪（真円筒度が最も要
求される部分）とハブが分離された状態となつて
いるのでひけが同一である。その結果、真円度及
び円筒度が良好となる。その上、係合片が外輪の
先端に一体に設けられているので、ハブの構成部
品が一点で良い。 The cassette tape hub of the present invention includes an inner ring having driving claws provided on the inner circumferential surface, an outer ring connected to the inner ring and around which a magnetic tape is wound, and the outer ring. A hub for a cassette tape made of synthetic resin and comprising a notch portion that locks the magnetic tape through press-fitting of an engaging piece, the engaging piece being separated from the inner ring and provided at the tip of the outer ring that can swing. Since the support base of the outer ring is formed at a position facing the notch, the outer ring can swing around the support base 14'. Therefore, according to the present invention, it is easy to press fit the engagement piece into the notch, and the assembly work is facilitated. Furthermore, since the outer shape of the hub is formed by fitting the outer rings together, there is no difference in level as in the conventional case, and there is an advantage that the roundness is increased. Furthermore, since the engaging piece 15 having a tape fixing function is integrated with the hub, the number of parts is reduced. In addition, since the outer ring (the part where true cylindricity is most required) and the hub, which are parts with different wall thicknesses during injection molding, are separated, the sink marks are the same. As a result, the roundness and cylindricity become good. Furthermore, since the engagement piece is integrally provided at the tip of the outer ring, only one hub component is required.
第１図は従来のカセツトテープ用ハブの正面
図、第２図は本発明によるカセツトテープ用ハブ
の第一実施例の正面図、第３図、第４図及び第５
図は夫々第二、第三及び第四の実施例の正面図で
ある。
１，１１……駆動用爪、２，１２……内輪、
３，１３，１３′，１３″……リブ、５，１４，１
４′……外輪、１４ｂ……支承基部、１５……係
合片、１６……切欠き部。
FIG. 1 is a front view of a conventional cassette tape hub, FIG. 2 is a front view of a first embodiment of a cassette tape hub according to the present invention, FIGS. 3, 4, and 5.
The figures are front views of the second, third and fourth embodiments, respectively. 1, 11... Drive pawl, 2, 12... Inner ring,
3, 13, 13', 13''...rib, 5, 14, 1
4'... Outer ring, 14b... Support base, 15... Engagement piece, 16... Notch.
Claims (1)
該内輪に連結され、磁気テープが外周面に巻回さ
れる外輪と、該外輪に形成された係合片の圧入を
介して上記磁気テープを係止する切欠き部とから
成る合成樹脂製のカセツトテープ用ハブにおい
て、 上記係合片は、内輪と連結する支承基部から揺
動できるように分割された外輪の先端に設けられ
ており、該外輪の支承基部は上記切欠き部と対向
する位置に形成されていることを特徴とするカセ
ツトテープ用ハブ。 ２ 上記外輪は外形幅が均一に形成されているこ
とを特徴とする特許請求の範囲１に記載のカセツ
トテープ用ハブ。[Claims] 1. An inner ring having a driving claw provided on the inner circumferential surface;
A synthetic resin outer ring connected to the inner ring and having a magnetic tape wound around its outer circumferential surface, and a notch that locks the magnetic tape through press-fitting of an engagement piece formed on the outer ring. In the cassette tape hub, the engagement piece is provided at the tip of an outer ring that is divided so as to be able to swing from a support base that connects with the inner ring, and the support base of the outer ring is located at a position facing the notch. A hub for a cassette tape, characterized in that it is formed as follows. 2. The cassette tape hub according to claim 1, wherein the outer ring has a uniform outer width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4657782A JPS58164065A (en) | 1982-03-24 | 1982-03-24 | Hub for cassette tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4657782A JPS58164065A (en) | 1982-03-24 | 1982-03-24 | Hub for cassette tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58164065A JPS58164065A (en) | 1983-09-28 |
| JPS6260754B2 true JPS6260754B2 (en) | 1987-12-17 |
Family
ID=12751150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4657782A Granted JPS58164065A (en) | 1982-03-24 | 1982-03-24 | Hub for cassette tape |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58164065A (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4949911U (en) * | 1972-08-07 | 1974-05-01 |
-
1982
- 1982-03-24 JP JP4657782A patent/JPS58164065A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58164065A (en) | 1983-09-28 |
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