JPH0536668U

JPH0536668U - Tape cassette

Info

Publication number: JPH0536668U
Application number: JP082796U
Authority: JP
Inventors: 武彦東城
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 1991-10-11
Filing date: 1991-10-11
Publication date: 1993-05-18

Abstract

(57)【要約】【目的】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、ハブの回転不良を生じるおそれのないテー
プカセットを提供すること。【構成】カセット本体内に、磁気テープが巻装された
一対のハブを滑りシートを装着して回転自在に収納し、
下ハーフに上記ハブが遊嵌する段差部を有するテープカ
セットにおいて、使用時における上記ハブの荷重を上記
段差部の下面で受けるように、上記ハブまたは上記段差
部を形成し、且つ該段差部の下面を粗面となすか、また
は該段差部の下面に多数の小突起を設けたことを特徴と
する。 (57) [Summary] [Purpose] To provide a tape cassette in which there is no risk of damaging the tape edge when the tape is running, and there is no risk of hub rotation failure. [Structure] In the cassette body, a pair of hubs around which a magnetic tape is wound are rotatably accommodated by attaching sliding sheets.
In a tape cassette having a step portion in which the hub is loosely fitted in the lower half, the hub or the step portion is formed so that the lower surface of the step portion receives the load of the hub during use, and It is characterized in that the lower surface is rough or a large number of small projections are provided on the lower surface of the step portion.

Description

[Detailed description of the device]

【０００１】[0001]

[Industrial applications]

本考案はテープカセット、詳しくは、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、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。 The present invention relates to a tape cassette, and more particularly, to a tape cassette that does not damage the tape edge when the tape is running and does not cause a rotation failure of the hub.

【０００２】[0002]

[Prior Art]

一般のテープカセットは、図４に示す如く、カセット本体１内に回転自在に収納された上記ハブ３０に巻装された磁気テープ２の両側に滑りシート４ａ、４ｂを配し、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、上記テープカセットの下ハーフ５には段差部６が設けられており、上記ハブ３０の上記下ハーフ５側の端部３０ａは、上記段差部６に遊嵌されている。 In a general tape cassette, as shown in FIG. 4, slip sheets 4a and 4b are arranged on both sides of the magnetic tape 2 wound around the hub 30 rotatably housed in the cassette body 1, and the magnetic tape It is designed to prevent winding disorder of 2. A step portion 6 is provided on the lower half 5 of the tape cassette, and an end portion 30a of the hub 30 on the lower half 5 side is loosely fitted to the step portion 6.

【０００３】[0003]

[Problems to be solved by the device]

しかしながら、上記のテープカセットにおいては、図４に示す如く、上記段差部６に遊嵌されている上記ハブ３０の上記下ハーフ５側の端部３０ａは、上記段差部６の下面６ａと離れた状態で遊嵌されており、上記ハブ３０は、テープカセットの使用時には、該ハブ３０は巻装された磁気テープ２と共に上記滑りシート４ａを介して上記下ハーフ５で支持されている。そのため、上記磁気テープ２はその走行時に上記滑りシート４ａと強く当接するため、テープエッジ２ａが破損するおそれがあった。 However, in the above-mentioned tape cassette, as shown in FIG. 4, the end portion 30a of the hub 30 which is loosely fitted in the step portion 6 on the lower half 5 side is separated from the lower surface 6a of the step portion 6. When the tape cassette is used, the hub 30 is supported by the lower half 5 via the sliding sheet 4a together with the wound magnetic tape 2 when the tape cassette is used. Therefore, the magnetic tape 2 strongly abuts the sliding sheet 4a during its running, which may damage the tape edge 2a.

【０００４】また、このようなおそれを解決するために、上記ハブ３０の荷重を上記段差部６の下面６ａで受け、上記滑りシート４ａの上記テープ２に対する当接力を弱くすることが考えられるが、この場合、テープカセットの使用時において、上記ハブ３０は、その上記下ハーフ５側の端部３０ａが上記段差部の下面６ａと強く当接しながら回転するため、トルクが高くなり過ぎて、回転不良が生じるおそれがあった。In order to solve such a fear, it is considered that the load of the hub 30 is received by the lower surface 6a of the step portion 6 to weaken the contact force of the sliding sheet 4a with the tape 2. In this case, when the tape cassette is used, the hub 30 rotates while the end portion 30a thereof on the lower half 5 side strongly contacts the lower surface 6a of the step portion, so that the torque becomes too high. There was a risk of rotation failure.

【０００５】従って、本考案の目的は、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、ハブの回転不良を生じるおそれの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 is free from the risk of damaging the tape edge when the tape is running and from causing the hub rotation failure.

【０００６】[0006]

[Means for Solving the Problems]

本考案は、カセット本体内に、磁気テープが巻装された一対のハブを滑りシートを装着して回転自在に収納し、下ハーフに上記ハブが遊嵌する段差部を有するテープカセットにおいて、使用時における上記ハブの荷重を上記段差部の下面で受けるように、上記ハブまたは上記段差部を形成し、且つ該段差部の下面を粗面となすか、または該段差部の下面に多数の小突起を設け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。 According to the present invention, a pair of hubs around which a magnetic tape is wound are housed rotatably in a cassette body by mounting a slide sheet, and a lower half has a step portion into which the hub is loosely fitted. The hub or the stepped portion is formed so that the load of the hub during use is received by the lower surface of the stepped portion, and the lower surface of the stepped portion is roughened, or a large number of pieces are formed on the lower surface of the stepped portion. The above object is achieved by providing a tape cassette characterized by having a small protrusion.

【０００７】[0007]

[Action]

本考案のテープカセットによれば、テープの走行時に下ハーフに設けられた段差部の下面でハブの荷重を受けるため、テープエッジが滑りシートに強く当接せず、該テープエッジの破損のおそれがなく、且つ上記段差部の下面を粗面となすかまたは該下面に多数の小突起を設けてあるので、ハブの荷重を上記下面で受けてもハブの回転トルクが高くなり過ぎず、ハブの回転不良を生じるおそれもない。 According to the tape cassette of the present invention, since the load of the hub is received on the lower surface of the stepped portion provided on the lower half when the tape is running, the tape edge does not strongly contact the sliding sheet, and the tape edge is not damaged. There is no danger, and since the lower surface of the stepped portion is roughened or many small projections are provided on the lower surface, the hub rotation torque does not become too high even if the hub load is received by the lower surface. There is no risk of hub rotation failure.

【０００８】[0008]

【Example】

以下、本考案のテープカセットの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もので、図１はその斜視図、図２は図１上II−II線拡大断面図である。本実施例のテープカセットは、図２に示す如く、カセット本体１内に、磁気テープ２が巻装された一対のハブ３を滑りシート４ａ、４ｂを装着して回転自在に収納しており、下ハーフ５の内面に上記ハブ３が遊嵌する段差部６を有している。 An embodiment of the tape cassette of the present invention will be described below with reference to the drawings. 1 shows an embodiment of the tape cassette of the present invention. FIG. 1 is a perspective view thereof, and FIG. 2 is an enlarged sectional view taken along line II-II of FIG. As shown in FIG. 2, the tape cassette according to the present embodiment has a pair of hubs 3 each having a magnetic tape 2 wound therein, which are rotatably accommodated by attaching sliding sheets 4a and 4b. The lower half 5 has a stepped portion 6 on which the hub 3 is loosely fitted.

【０００９】而して、本実施例のテープカセットは、図２に示す如く、使用時における上記ハブ３の荷重を上記段差部６の下面６ａで受けるように、上記ハブ３を設け、且つ上記下面６ａを微小な凹凸部を有する粗面としてある。本実施例について更に説明すると、図２に示す如く、上記ハブ３の下ハーフ５側の長さＬを従来のハブ３０よりも長く形成してあり、上記ハブ３の端部３ａが上記段差部６の下面６ａに当接し、上記ハブ３の荷重を上記段差部６の下面６ａで受けるようになしてある。そして、上記ハブ３に巻装された磁気テープ２がテープ走行時に上記滑りシート４ａに強く当接しないようになしてある。As shown in FIG. 2, the tape cassette of this embodiment is provided with the hub 3 so that the lower surface 6a of the step 6 receives the load of the hub 3 during use, and The lower surface 6a is a rough surface having minute irregularities. This embodiment will be further described. As shown in FIG. 2, the length L of the hub 3 on the lower half 5 side is longer than that of the conventional hub 30, and the end 3a of the hub 3 has the step portion. The lower surface 6a of the stepped portion 6 is brought into contact with the lower surface 6a of the stepped portion 6 and the lower surface 6a of the stepped portion 6 receives the load of the hub 3. The magnetic tape 2 wound around the hub 3 does not come into strong contact with the sliding sheet 4a during tape running.

【００１０】また、上記ハブ３の荷重を受ける上記段差部６の下面６ａを粗面にするための微小な凹凸部は、上記ハブ３の端部３ａと上記下面６ａとの接触面積が、上記下面６ａが平滑面である場合に対して１０％以下となるように設けてあり、テープカセットの使用時に、上記ハブ３の端部３ａが上記段差部６の下面６ａと当接しながら回転する際のトルクが高くなり過ぎないようにしてある。Further, the minute uneven portion for roughening the lower surface 6a of the stepped portion 6 that receives the load of the hub 3 has a contact area between the end 3a of the hub 3 and the lower surface 6a as described above. When the tape cassette is used, the end 3a of the hub 3 rotates while contacting the lower surface 6a of the step 6 when the lower surface 6a is a smooth surface. The torque at the time is not too high.

【００１１】以上のように構成した本考案のテープカセットは、上記テープ２の走行時に上記下ハーフ５に設けられた上記段差部６の下面６ａで上記ハブ３の荷重を受けるため、上記テープエッジ２ａが上記滑りシート４ａに強く当接せず、該テープエッジ２ａの破損のおそれがなく、且つ上記段差部６の下面６ａを微小な凹凸部を有する粗面となしてあるので、上記ハブ３の荷重を上記下面６ａで受けても上記ハブ３の回転トルクが高くなり過ぎず、上記ハブ３の回転不良を生じるおそれもない。The tape cassette of the present invention constructed as described above receives the load of the hub 3 on the lower surface 6a of the stepped portion 6 provided on the lower half 5 when the tape 2 is running. Since the edge 2a does not come into strong contact with the sliding sheet 4a, there is no risk of damage to the tape edge 2a, and the lower surface 6a of the stepped portion 6 is a rough surface having minute uneven portions. Even if the load of the hub 3 is received by the lower surface 6a, the rotation torque of the hub 3 does not become too high, and the rotation failure of the hub 3 does not occur.

【００１２】また、上記実施例では、上記下面６ａを微小な凹凸部を有する粗面としたが、上記下面６ａを粗面にするかわりに、図３に示す如く、上記下面６ａに小突起６ｂを多数設け、該小突起６ｂの頂部で上記ハブ３の荷重を受けるようにしても良く、このような実施例も上記実施例のテープカセットと同様な効果を奏する。本考案のテープカセットは上記実施例に示すものに限定されるものではなく、例えば、上記粗面又は上記小突起の形態は、使用時におけるハブの回転トルクが高くなり過ぎないようにしてあれば良く、また、上記ハブの下ハーフ側の長さを長くするかわりに、上記下ハーフの段差部の下面を上記ハブ側に上げて、上記ハブの端部と上記段差部の下面とを当接させるようにしても良い。Further, in the above-described embodiment, the lower surface 6a is a rough surface having minute irregularities, but instead of the lower surface 6a being a rough surface, small projections 6 are formed on the lower surface 6a as shown in FIG. It is also possible to provide a large number of b and receive the load of the hub 3 at the top of the small projection 6b. Such an embodiment also has the same effect as the tape cassette of the above embodiment. The tape cassette of the present invention is not limited to the one shown in the above embodiment. For example, the shape of the rough surface or the small protrusions may be set so that the rotation torque of the hub during use does not become too high. Also, instead of increasing the length of the lower half side of the hub, raise the lower surface of the stepped portion of the lower half toward the hub side, and contact the end of the hub with the lower surface of the stepped portion. You may contact.

【００１３】[0013]

[Effect of the device]

本考案のテープカセットは、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、ハブの回転不良を生じるおそれがない。 The tape cassette of the present invention has no risk of damaging the tape edge when the tape is running and no risk of hub rotation failure.

[Brief description of drawings]

【図１】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１のII−II線の拡大断面図である。FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

【図３】別の実施例における図２相当図である。FIG. 3 is a view corresponding to FIG. 2 in another embodiment.

【図４】従来のテープカセットを示す図２相当図であ
る。FIG. 4 is a view corresponding to FIG. 2 showing a conventional tape cassette.

[Explanation of symbols]

１カセット本体２磁気テープ３ハブ４ａ滑りシート４ｂ滑りシート５下ハーフ６段差部６ａ段差部の下面 1 Cassette Main Body 2 Magnetic Tape 3 Hub 4a Sliding Sheet 4b Sliding Sheet 5 Lower Half 6 Step 6a Bottom of Step

Claims

[Scope of utility model registration request]

1. A tape cassette having a stepped portion into which a hub is loosely fitted, in which a pair of hubs, around which magnetic tapes are wound, are rotatably accommodated by mounting sliding sheets in a cassette body. The hub or the stepped portion is formed so that the lower surface of the stepped portion receives the load of the hub during use, and the lower surface of the stepped portion is a rough surface, or a large number of lower surfaces of the stepped portion are formed. A tape cassette characterized by having small protrusions.