JPH0677068U - Tape cassette - Google Patents
Tape cassetteInfo
- Publication number
- JPH0677068U JPH0677068U JP1353893U JP1353893U JPH0677068U JP H0677068 U JPH0677068 U JP H0677068U JP 1353893 U JP1353893 U JP 1353893U JP 1353893 U JP1353893 U JP 1353893U JP H0677068 U JPH0677068 U JP H0677068U
- Authority
- JP
- Japan
- Prior art keywords
- hub
- cassette
- tape
- loose fitting
- ribs
- 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.)
- Pending
Links
Abstract
(57)【要約】
【目的】 磁気テープの走行時にテープエッジを損傷す
るおそれがなく且つハブの回転不良を生じるおそれがな
いテープカセットを提供すること。
【構成】 上ハーフ及び下ハーフからなるカセット本体
内に、磁気テープが巻回された一対の巻取・供給ハブを
回転自在に収納し、上記下ハーフに、上記ハブの側面中
央部に突出した筒状凸部が遊嵌するハブ遊嵌凹部を有す
るテープカセットにおいて、上記ハブ遊嵌凹部の底面
に、上記筒状凸部の端面が当接する直線状のリブを複数
本設けるか、又は上記筒状凸部の端面が当接する突起を
３個以上所定間隔で設け、カセットの使用時における上
記ハブの荷重を上記リブ又は上記突起で支持するように
したことを特徴とする。
(57) [Abstract] [Purpose] To provide a tape cassette in which there is no risk of damaging the tape edge when the magnetic tape is running and no risk of rotation failure of the hub. [Structure] A pair of take-up / supply hubs around which a magnetic tape is wound are rotatably housed in a cassette body composed of an upper half and a lower half, and the lower half projects into the center of the side surface of the hub. In a tape cassette having a hub loose fitting recess into which a tubular convex portion loosely fits, a plurality of linear ribs with which the end surface of the cylindrical convex portion abuts are provided on the bottom surface of the hub loose fitting recess, or It is characterized in that three or more projections with which the end faces of the convex portions abut are provided at predetermined intervals, and that the load of the hub during use of the cassette is supported by the ribs or the projections.
Description
【０００１】[0001]
本考案はテープカセット、詳しくは、磁気テープの走行時にテープエッジを損 傷するおそれがなく且つハブの回転不良を生じるおそれがないテープカセットに 関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cassette, and more particularly, to a tape cassette that does not damage a tape edge when running a magnetic tape and does not cause a rotation failure of a hub.
【０００２】[0002]
一般のテープカセットは、図６に示す如く、上ハーフ５ａ及び下ハーフ５ｂか らなるカセット本体１内に、磁気テープ２が巻回された一対の巻取・供給ハブ３ ，３（図６はその一つを示す）を回転自在に収納してあり、また、上記磁気テー プ２の上下両側には、それぞれ滑りシート４ａ，４ｂを配して、上記磁気テープ ２の巻き乱れを防止するようにしてある。 また、上記下ハーフ５ｂには一対のハブ遊嵌凹部６，６（図６はその一つを示 す）を設けてあり、上記ハブ３，３それぞれの側面中央部に突出した筒状凸部３ １，３１が、それぞれ上記ハブ遊嵌凹部６，６内に遊嵌されている。 As shown in FIG. 6, a general tape cassette has a pair of take-up / supply hubs 3 and 3 (see FIG. 6) in which a magnetic tape 2 is wound in a cassette body 1 composed of an upper half 5a and a lower half 5b. (One of which is shown) is rotatably housed, and slip sheets 4a and 4b are arranged on the upper and lower sides of the magnetic tape 2 to prevent the magnetic tape 2 from being disturbed. I am doing it. Further, the lower half 5b is provided with a pair of hub loose fitting recesses 6 and 6 (one of which is shown in FIG. 6). 31 and 31 are loosely fitted in the hub loose fitting recesses 6 and 6, respectively.
【０００３】[0003]
しかしながら、上記ハブ遊嵌凹部６に遊嵌されている上記筒状凸部３１は、図 ６に示す如く、その端面３２が上記ハブ遊嵌凹部６の底面６１′から離れた状態 で遊嵌されており、カセットの使用時には、上記ハブ３の側面外周側及び該ハブ ３に巻回されている磁気テープ２が、上記滑りシート４ｂを介して上記下ハーフ ５ｂに支持されている。従って、上記磁気テープ２の上記下ハーフ５ｂ側のテー プエッジ２１は、その走行時に上記滑りシート４ｂと強く当接し、そのため該テ ープエッジ２１が損傷するおそれがある。 However, as shown in FIG. 6, the tubular convex portion 31 loosely fitted into the hub loose fitting recess 6 is loosely fitted with the end face 32 thereof separated from the bottom surface 61 ′ of the hub loose fitting recess 6. Thus, when the cassette is used, the outer peripheral side of the hub 3 and the magnetic tape 2 wound around the hub 3 are supported by the lower half 5b via the sliding sheet 4b. Therefore, the tape edge 21 on the side of the lower half 5b of the magnetic tape 2 strongly abuts the sliding sheet 4b during its running, which may damage the tape edge 21.
【０００４】 そこで、上記ハブ３における上記筒状凸部３１の端面３２が上記ハブ遊嵌凹部 ６の底面６１′に当接するようにし、磁気テープの走行時に、上記底面６１′で 上記ハブ３の荷重を支持して、上記滑りシート４ｂの上記磁気テープ２への当接 力を弱くすることが考えられるが、その場合、上記筒状凸部３１の端面３２が上 記ハブ遊嵌凹部６の底面６１′と強く当接しながら回転するため、上記ハブ３の トルクが過大となり、上記ハブ３の回転不良を生じるおそれがある。Therefore, the end surface 32 of the cylindrical convex portion 31 of the hub 3 is brought into contact with the bottom surface 61 ′ of the hub loose fitting concave portion 6, and the bottom surface 61 ′ of the hub 3 of the hub 3 moves when the magnetic tape is running. It is conceivable to support the load and weaken the abutting force of the sliding sheet 4b on the magnetic tape 2. In that case, the end surface 32 of the cylindrical convex portion 31 is formed in the hub loose fitting concave portion 6 described above. Since the hub 3 rotates while coming into close contact with the bottom surface 61 ', the torque of the hub 3 becomes excessively large, which may cause the rotation failure of the hub 3.
【０００５】 従って、本考案の目的は、磁気テープの走行時にテープエッジを損傷するおそ れがなく且つハブの回転不良を生じるおそれがないテープカセットを提供するこ とにある。Therefore, an object of the present invention is to provide a tape cassette that does not cause damage to the tape edge when the magnetic tape is running and that does not cause rotation failure of the hub.
【０００６】[0006]
本考案は、上ハーフ及び下ハーフからなるカセット本体内に、磁気テープが巻 回された一対の巻取・供給ハブを回転自在に収納し、上記下ハーフに、上記ハブ の側面中央部に突出した筒状凸部が遊嵌するハブ遊嵌凹部を有するテープカセッ トにおいて、上記ハブ遊嵌凹部の底面に、上記筒状凸部の端面が当接する直線状 のリブを複数本設けるか、又は上記筒状凸部の端面が当接する突起を３個以上所 定間隔で設け、カセットの使用時における上記ハブの荷重を上記リブ又は上記突 起で支持するようにしたことを特徴とするテープカセットを提供することにより 、上記目的を達成したものである。 The present invention rotatably accommodates a pair of take-up / supply hubs on which magnetic tape is wound, in a cassette body consisting of an upper half and a lower half, and the lower half protrudes to the center of the side surface of the hub. In the tape cassette having a hub loose fitting recess into which the cylindrical convex portion is loosely fitted, a plurality of linear ribs with which the end surface of the cylindrical convex portion abuts are provided on the bottom surface of the hub loose fitting recess, or A tape cassette, characterized in that three or more projections with which the end faces of the cylindrical projections come into contact are provided at fixed intervals so that the load of the hub during use of the cassette is supported by the ribs or the projections. By providing it, the above-mentioned object is achieved.
【０００７】[0007]
本考案のテープカセットによれば、磁気テープの走行時に、上記ハブにおける 上記筒状凸部の端面が、上記下ハーフの上記ハブ遊嵌凹部の底面における複数本 の直線状の上記リブ又は３個以上所定間隔で設けた上記突起に当接し、上記リブ 又は上記突起で上記ハブの荷重を支持するため、上記磁気テープのテープエッジ が上記滑りシートに強く当接して損傷を受けるおそれがなく、且つ上記筒状凸部 の端面と上記リブ又は上記突起との間の摩擦抵抗は、従来のハブ遊嵌凹部におけ る平坦な底面との間のそれと比較して少ないので、上記ハブのトルクは過大とな らず、上記ハブの回転不良を生じるおそれがない。 According to the tape cassette of the present invention, when the magnetic tape is running, the end surface of the cylindrical convex portion of the hub is the plurality of linear ribs or three linear ribs on the bottom surface of the hub loose fitting concave portion of the lower half. Since the ribs or the protrusions support the load of the hub by contacting the protrusions provided at the predetermined intervals, there is no risk that the tape edge of the magnetic tape strongly abuts the sliding sheet and is damaged. Since the frictional resistance between the end surface of the cylindrical convex portion and the rib or the protrusion is smaller than that between the flat bottom surface of the conventional hub loose fitting concave portion, the torque of the hub is excessive. Therefore, there is no possibility that the hub may not rotate properly.
【０００８】[0008]
【実施例】 以下、本考案のテープカセットの一実施例を図面を参照して説明する。 図１は本考案のテープカセットの一実施例を示す斜視図、図２は図１のＡ−Ａ 線矢視拡大断面図、図３は図２に示すハブ遊嵌凹部の斜視図である。Embodiment An embodiment of the tape cassette of the present invention will be described below with reference to the drawings. 1 is a perspective view showing an embodiment of the tape cassette of the present invention, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. 3 is a perspective view of the hub loose fitting recess shown in FIG.
【０００９】 本実施例のテープカセットは、図１及び図２に示す如く、上ハーフ５ａ及び下 ハーフ５ｂからなるカセット本体１内に、磁気テープ２が巻回された一対の巻取 ・供給ハブ３，３を回転自在に収納し、上記磁気テープ２の上下両側にはそれぞ れ滑りシート４ａ、４ｂを装着してある。また上記下ハーフ５ｂの内面には、一 対のハブ遊嵌凹部６，６（図２はその一つを示す）が設けられ、上記ハブ３，３ それぞれの側面中央部に突出した筒状凸部３１，３１が、それぞれ上記ハブ遊嵌 凹部６，６内に遊嵌されている。As shown in FIGS. 1 and 2, the tape cassette of the present embodiment is a pair of take-up / supply hubs in which a magnetic tape 2 is wound in a cassette body 1 composed of an upper half 5a and a lower half 5b. 3 and 3 are rotatably housed, and sliding sheets 4a and 4b are attached to the upper and lower sides of the magnetic tape 2 respectively. Further, a pair of hub loose fitting recesses 6 and 6 (one of which is shown in FIG. 2) are provided on the inner surface of the lower half 5b, and the cylindrical projections projecting from the central portions of the side surfaces of the hubs 3 and 3, respectively. The parts 31 and 31 are loosely fitted in the hub loose fitting recesses 6 and 6, respectively.
【００１０】 而して、本実施例のテープカセットは、図２及び図３に示す如く、上記ハブ遊 嵌凹部６の底面６１に、上記筒状凸部３１の端面３２が当接する２本の直線状の リブ７，７を設け、カセットの使用時における上記ハブ３の荷重を上記リブ７， ７で支持するようにしてある。As shown in FIGS. 2 and 3, the tape cassette of this embodiment has two bottom surfaces 61 of the hub fitting recess 6 to which the end surface 32 of the cylindrical projection 31 abuts. Linear ribs 7, 7 are provided so that the load of the hub 3 when the cassette is used is supported by the ribs 7, 7.
【００１１】 本実施例について更に説明すると、図２及び図３に示す如く、２本の上記リブ ７，７は、断面がほぼ三角形のもので、それぞれ頂部をやや丸くしてあり、ハブ ホール５１を挟んで両側に、両者平行に上記ハブ遊嵌凹部６の一端から一端まで 設けてある。そして、上記リブ７，７の高さ又は上記ハブ３の上記筒状凸部３１ の突出長さを、カセットの使用時に上記筒状凸部３１の端面３２が上記リブ７， ７に当接した際、上記ハブ３に巻回された磁気テープ２が上記滑りシート４ｂに 強く当接しないような寸法として、上記リブ７，７でもって上記ハブ３の荷重を 支持するようにしてある。This embodiment will be further described. As shown in FIGS. 2 and 3, the two ribs 7 and 7 each have a substantially triangular cross section, each of which has a slightly rounded top and a hub hole 51. The hub loosely fitting recess 6 is provided on both sides of the hub loosely in parallel to each other. The height of the ribs 7, 7 or the protruding length of the tubular convex portion 31 of the hub 3 is set so that the end surface 32 of the tubular convex portion 31 contacts the ribs 7, 7 when the cassette is used. At this time, the size of the magnetic tape 2 wound around the hub 3 does not come into strong contact with the sliding sheet 4b, and the ribs 7, 7 support the load of the hub 3.
【００１２】 以上のように構成された本実施例のテープカセットは、磁気テープの走行時に 、上記ハブ遊嵌凹部６の２本の上記リブ７，７で上記ハブ３の荷重を支持するた め、上記磁気テープ２のテープエッジ２１が上記滑りシート４ｂに強く当接せず 、このため該テープエッジ２１が損傷を受けるおそれがなく、且つ上記筒状凸部 ３１の端面３２と上記リブ７，７との間の摩擦抵抗は、従来のハブ遊嵌凹部６に おける平坦な底面６１′との間のそれと比較して少ないので、上記ハブ３のトル クは過大とならず、上記ハブ３の回転不良を生じるおそれがない。In the tape cassette of the present embodiment configured as described above, the load of the hub 3 is supported by the two ribs 7, 7 of the hub loose fitting recess 6 when the magnetic tape is running. The tape edge 21 of the magnetic tape 2 does not come into strong contact with the sliding sheet 4b, so that the tape edge 21 is not likely to be damaged, and the end surface 32 of the tubular convex portion 31 and the rib 7, Since the frictional resistance with the hub 7 is smaller than that with the flat bottom surface 61 'in the conventional hub loose fitting recess 6, the torque of the hub 3 does not become excessive and the hub 3 of the hub 3 does not become excessive. There is no risk of rotation failure.
【００１３】 図４及び図５は、本考案のテープカセットの第２の実施例を示し、図４は、第 １の実施例の図２に相当する断面図、図５は、同じく図３に相当する斜視図であ る。 第２の実施例のテープカセットは、上記第１の実施例における２本のリブ７， ７を、上記ハブホール５１と同心円をなす円周上に所定間隔で設けた３個のほぼ 半球状を呈する突起８，８，．．で置き換えてあり、この点が第１の実施例と異 なり、この点以外は第１の実施例と同様に構成されている。 上記所定間隔としては、等間隔であることが好ましい。FIGS. 4 and 5 show a second embodiment of the tape cassette of the present invention, FIG. 4 is a sectional view corresponding to FIG. 2 of the first embodiment, and FIG. It is a corresponding perspective view. The tape cassette of the second embodiment exhibits three substantially hemispherical shapes in which the two ribs 7, 7 of the first embodiment are provided at predetermined intervals on the circumference of a circle concentric with the hub hole 51. Protrusions 8, 8 ,. ． The second embodiment is different from the first embodiment in that it is the same as the first embodiment. The predetermined intervals are preferably equal intervals.
【００１４】 第２の実施例のテープカセットにおいても、第１の実施例と同様の効果が奏さ れ、また、第２の実施例においては、上記筒状凸部３１の端面３２と上記突起８ ，８，．．との間の摩擦抵抗が更に少ないため、上記ハブ３のトルクが一層軽減 される効果もある。In the tape cassette of the second embodiment, the same effect as that of the first embodiment can be obtained, and in the second embodiment, the end surface 32 of the cylindrical convex portion 31 and the projection 8 can be obtained. , 8 ,. ． Since the frictional resistance between the hub and the hub is even smaller, the torque of the hub 3 can be further reduced.
【００１５】 尚、本考案は、上記実施例に制限されるものではなく、例えば、上記リブの本 数は３本以上でも良く、また、複数本の上記リブは平行に設けなくても良い。ま た、上記突起の個数を４個以上設けても良い。また、上記リブ及び上記突起の形 状は、本考案の趣旨を逸脱しない限り、適宜変更が可能である。The present invention is not limited to the above embodiment, and for example, the number of the ribs may be three or more, and the plurality of ribs may not be provided in parallel. Moreover, the number of the protrusions may be four or more. Further, the shapes of the ribs and the protrusions can be appropriately changed without departing from the gist of the present invention.
【００１６】[0016]
本考案のテープカセットは、磁気テープの走行時にテープエッジを損傷するお それがなく且つハブの回転不良を生じるおそれがない。 The tape cassette of the present invention does not damage the tape edge when the magnetic tape is running and does not cause the hub rotation failure.
【図１】図１は本考案のテープカセットの一実施例を示
す斜視図である。FIG. 1 is a perspective view showing an embodiment of a tape cassette of the present invention.
【図２】図２は図１のＡ−Ａ線矢視拡大断面図である。FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG.
【図３】図３は図２に示すハブ遊嵌凹部の斜視図であ
る。FIG. 3 is a perspective view of the hub loose fitting recess shown in FIG. 2.
【図４】図４は本考案のテープカセットの第２の実施例
を示す図２相当図である。FIG. 4 is a view corresponding to FIG. 2 showing a second embodiment of the tape cassette of the present invention.
【図５】図５は第２の実施例のテープカセットにおける
図３相当図である。FIG. 5 is a view corresponding to FIG. 3 in the tape cassette of the second embodiment.
【図６】図６は従来のテープカセットを示す図２相当図
である。FIG. 6 is a view corresponding to FIG. 2 showing a conventional tape cassette.
１ カセット本体 ２ 磁気テープ ３ 巻取・供給ハブ ３１ 筒状凸部 ３２ 端面 ４ａ 滑りシート ４ｂ 滑りシート ５ａ 上ハーフ ５ｂ 下ハーフ ６ ハブ遊嵌凹部 ６１ 底面 ７ リブ ８ 突起 1 Cassette Main Body 2 Magnetic Tape 3 Winding / Supply Hub 31 Cylindrical Convex Part 32 End Face 4a Sliding Sheet 4b Sliding Sheet 5a Upper Half 5b Lower Half 6 Hub Loose Fitting Concavity 61 Bottom 7 Rib 8 Protrusion
Claims (1)
本体内に、磁気テープが巻回された一対の巻取・供給ハ
ブを回転自在に収納し、上記下ハーフに、上記ハブの側
面中央部に突出した筒状凸部が遊嵌するハブ遊嵌凹部を
有するテープカセットにおいて、 上記ハブ遊嵌凹部の底面に、上記筒状凸部の端面が当接
する直線状のリブを複数本設けるか、又は上記筒状凸部
の端面が当接する突起を３個以上所定間隔で設け、カセ
ットの使用時における上記ハブの荷重を上記リブ又は上
記突起で支持するようにしたことを特徴とするテープカ
セット。1. A pair of take-up / supply hubs around which a magnetic tape is wound are rotatably housed in a cassette body composed of an upper half and a lower half, and the lower half is provided with a central portion of a side surface of the hub. In a tape cassette having a hub loose fitting recess into which a protruding tubular convex portion is loosely fitted, a plurality of linear ribs with which the end surface of the tubular convex portion abuts are provided on the bottom surface of the hub loose fitting recess, or A tape cassette, characterized in that three or more projections, with which the end faces of the cylindrical projections abut, are provided at predetermined intervals so that the load of the hub during use of the cassette is supported by the ribs or the projections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1353893U JPH0677068U (en) | 1993-03-23 | 1993-03-23 | Tape cassette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1353893U JPH0677068U (en) | 1993-03-23 | 1993-03-23 | Tape cassette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0677068U true JPH0677068U (en) | 1994-10-28 |
Family
ID=11835939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1353893U Pending JPH0677068U (en) | 1993-03-23 | 1993-03-23 | Tape cassette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677068U (en) |
-
1993
- 1993-03-23 JP JP1353893U patent/JPH0677068U/en active Pending
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