JP2590825Y2 - Tape cassette - Google Patents
Tape cassetteInfo
- Publication number
- JP2590825Y2 JP2590825Y2 JP1992046133U JP4613392U JP2590825Y2 JP 2590825 Y2 JP2590825 Y2 JP 2590825Y2 JP 1992046133 U JP1992046133 U JP 1992046133U JP 4613392 U JP4613392 U JP 4613392U JP 2590825 Y2 JP2590825 Y2 JP 2590825Y2
- Authority
- JP
- Japan
- Prior art keywords
- window
- window member
- cassette half
- thickness
- tape cassette
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本考案はテープカセットに関し、
詳しくはテープ残量を確認するための複数の窓部材を設
けたビデオ用テープカセットの改良に関する。The present invention relates to a tape cassette.
More specifically, the present invention relates to an improvement in a video tape cassette provided with a plurality of window members for checking the remaining amount of tape.
【０００２】[0002]
【従来技術】従来から、ビデオ用テープカセットではテ
ープ残量を確認するための窓部材がその上側カセットハ
ーフ部材に溶着されている。図３にはそうした従来のビ
デオ用テープカセット１の上側カセットハーフ部材３
の、窓部材５を溶着した部分の断面図が示されている。
一般に、こうした窓部材５はその肉厚が１．４から１．
８ｍｍである。従来から、こうした構成のビデオ用テー
プカセットの形成材料である樹脂のコストを下げるため
の軽量化が種々試みられて来ている。そのために最も簡
単には、上側カセットハーフ部材の窓部材の周囲部分全
体の肉厚を薄くすれば良いが、それだけでは窓部材を上
側カセットハーフ部材に溶着する工程での窓ずれの発生
を防止し得ず、これが溶着不良を招く。また上側カセッ
トハーフ部材自体の構造的強度も低下してしまう。2. Description of the Related Art Conventionally, in a video tape cassette, a window member for checking the remaining amount of tape is welded to an upper cassette half member. FIG. 3 shows an upper cassette half member 3 of such a conventional video tape cassette 1.
2 is a sectional view of a portion where the window member 5 is welded.
Generally, such a window member 5 has a wall thickness of 1.4 to 1.
8 mm . From the past, weight for lowering the cost of the resin, which is a material for forming the video tape cassette of this configuration is come been variously attempted. The simplest way is to reduce the thickness of the entire peripheral portion of the window member of the upper cassette half member. However, this alone can prevent the occurrence of window misalignment in the step of welding the window member to the upper cassette half member. This results in poor welding. Also, the structural strength of the upper cassette half member itself is reduced.
【０００３】[0003]
【考案が解決しようとする課題】従って、解決しようと
する課題は、ビデオ用テープカセットの、上側カセット
ハーフ部材の構造的強度を損なうことなく軽量化を達成
し且つ製造コストを低下させることである。SUMMARY OF THE INVENTION It is therefore an object of the present invention to reduce the weight of a video tape cassette without compromising the structural strength of the upper cassette half and to reduce the manufacturing cost. .
【０００４】[0004]
【課題を解決するための手段】本考案に従えば、上側カ
セットハーフ部材に、窓部材を部分的に取り巻く補強リ
ブ部分を残した状態で窓部材の肉厚よりも薄肉の薄肉部
分が形成され、前記補強リブ部分が窓溶着工程での窓ず
れを防止し且つ上側カセットハーフ部材の構造的強度を
維持する。According to the present invention, the upper cassette half member is formed with a thin portion thinner than the thickness of the window member while leaving a reinforcing rib portion partially surrounding the window member. The reinforcing rib portion prevents the window from shifting during the window welding step and maintains the structural strength of the upper cassette half member.
【０００５】[0005]
【実施例】図１及び２を参照して本考案を詳しく説明す
る。図１には、本考案の使用する上側カセットハーフ部
材１０が、その窓部材１２を含む部分で横断方向に切断
された断面で示されている。図示されるように、窓部材
１２は従来と同様、その周囲部分に沿って段差部１４が
形成され、この段差部が、前記上側テープカセット部材
１０側の対応部分に形成された、後述される肩部１６に
溶着されるようになっている。また、窓部材１２は代表
的には図２に示されるように略四角形状を有し、一般的
には前記上側カセットハーフ部材１０の長手方向の各側
に各１つ、計２つが配設され、上側カセットハーフ部材
１０のこれら２つの窓部材１２同士が対向する間部分に
は、図２に示されるようにテープリールハブ（図示せ
ず）の上下動を抑えるためのばね部材（図示せず）が、
このばね部材を固定するための凹部１８内に配設され
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to FIGS. FIG. 1 shows an upper cassette half member 10 used in the present invention in a cross-sectional view cut in a transverse direction at a portion including a window member 12. As shown in the drawing, the window member 12 has a step portion 14 formed along its peripheral portion as in the related art, and this step portion is formed in a corresponding portion on the upper tape cassette member 10 side, which will be described later. It is adapted to be welded to the shoulder 16. The window member 12 typically has a substantially square shape as shown in FIG. 2, and two windows are generally provided, one on each side in the longitudinal direction of the upper cassette half member 10. A spring member ( not shown) for suppressing vertical movement of a tape reel hub (not shown) is provided between the two window members 12 of the upper cassette half member 10 facing each other, as shown in FIG. not) is,
The spring member is provided in a recess 18 for fixing the spring member .
【０００６】本考案に於ては上側カセットハーフ部材１
０の肉厚が、前記窓部材１２同士の長手方向の間部分と
窓部材１２のその他の３方の周囲帯状部分とを残し、前
記窓部材１２の肉厚の７０から９０％にまで減少され
る。つまり、窓部材の肉厚が１．４から１．８ｍｍであ
る場合、上側カセットハーフ部材１０の、前記窓部材１
２同士の長手方向の間部分以外の部分での肉厚は０．９
８から１．６ｍｍとなる。ビデオカセットなどの場合、
カセットハーフ肉厚は約１ｍｍが成形品限界数値であ
り、また、１．６ｍｍ以上では軽量化とは言い難くな
る。前記窓部材１２の３方に残された帯状周囲部分は、
窓部材１２の周囲の構造的強度を維持するための補強用
リブ２０を構成し、その内側部分には窓部材１２の前記
段差部１４を溶着させるための前記肩部１６が形成され
る。こうした構造により、窓部材１２の溶着は従来製品
におけると同様に、窓ずれを生じることなくカセットハ
ーフ部材に溶着可能であり、またカセットハーフ部材の
薄肉化された部分の構造的強度が前記補強用リブ２０に
よって維持される。In the present invention, the upper cassette half member 1 is used.
The thickness of the window member 12 is reduced from 70 to 90% of the thickness of the window member 12, leaving a portion between the window members 12 in the longitudinal direction and the other three peripheral band portions of the window member 12. You. That is, the thickness of the window member is 1.4 to 1.8 mm.
When the window member 1 of the upper cassette half member 10 is
The wall thickness at a portion other than the portion between the two in the longitudinal direction is 0.9.
8 to 1.6 mm. For video cassettes, etc.
The thickness of the cassette half is about 1 mm,
In addition, it is hard to say that the weight is reduced with 1.6 mm or more.
You. The strip-shaped peripheral portions left on three sides of the window member 12 are :
The reinforcing rib 20 for maintaining the structural strength around the window member 12 is formed, and the shoulder portion 16 for welding the step portion 14 of the window member 12 is formed inside the reinforcing rib 20. With such a structure, the window member 12 can be welded to the cassette half member without causing a window shift, as in the conventional product, and the structural strength of the thinned portion of the cassette half member is reduced by the reinforcement. Maintained by ribs 20.
【０００７】[0007]
【考案の効果】１．補強用リブ（２０）により窓部材溶
着工程での窓ずれが防止され、一方、前記補強用リブ部
分と、窓部材（１２）どうしの長手方向の間部分とを残
してカセットハーフ部材を薄肉化したことにより、カセ
ットハーフ部材の剛性劣化を来すことなくカセットハー
フ部材の軽量化が達成される。 ２．樹脂の総使用量が低減されそれによりテープカセッ
ト部材の製造コストが、その信頼性を低下させることな
く低減される。[Effect of the invention] Window member is melted by reinforcing rib (20)
The displacement of the window in the attaching process is prevented, while the reinforcing rib
And the portion between the window members (12) in the longitudinal direction.
By reducing the thickness of the cassette half member, the weight of the cassette half member can be reduced without deteriorating the rigidity of the cassette half member. 2. The total amount of resin used is reduced, thereby reducing the cost of manufacturing the tape cassette member without reducing its reliability.
【図１】本考案に従うカセットハーフ部材の、窓部材を
含む部分の断面図である。FIG. 1 is a sectional view of a portion including a window member of a cassette half member according to the present invention.
【図２】本考案に従うカセットハーフ部材の内側平面図
である。FIG. 2 is an inside plan view of the cassette half member according to the present invention.
【図３】従来のカセットハーフ部材の、窓部材を含む部
分の断面図である。FIG. 3 is a cross-sectional view of a portion including a window member of a conventional cassette half member.
１０：上側カセットハーフ部材 １２：窓部材 １４：段差部 １６：肩部 ２０：補強用リブ 10: Upper cassette half member 12: Window member 14: Stepped portion 16: Shoulder portion 20: Reinforcing rib
Claims (2)
材（１２）がカセットハーフ部材（１０）に溶着されて
成る形式のテープカセットであって、前記カセットハーフ部材（１０）を、前記窓部材（１
２）どうしの長手方向の間部分を残して前記窓部材の肉
厚の７０から９０％に薄肉化すると共に、窓部材のその
他の３方の周囲を帯状に取り巻く部分を補強用リブ部分
（２０）として残した ことを特徴とするテープカセッ
ト。1. A tape cassette of the type in which a plurality of window member for confirming the residual tape amount (12) is formed by welding to the cassette half member (10), said cassette half member (10), wherein Window member (1
2) The thickness of the window member except for a portion between the longitudinal directions.
The thickness of the window member is reduced from 70 to 90% of its thickness.
Reinforcing rib part around the other three sides
(20) A tape cassette characterized by being left as (20) .
る肩部（１６）に溶着されるようになっている請求項１
に記載のテープカセット。2. The window member is adapted to be welded to a shoulder (16) formed on a reinforcing rib (20).
The tape cassette according to the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992046133U JP2590825Y2 (en) | 1992-06-10 | 1992-06-10 | Tape cassette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992046133U JP2590825Y2 (en) | 1992-06-10 | 1992-06-10 | Tape cassette |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH064977U JPH064977U (en) | 1994-01-21 |
| JP2590825Y2 true JP2590825Y2 (en) | 1999-02-24 |
Family
ID=12738487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992046133U Expired - Fee Related JP2590825Y2 (en) | 1992-06-10 | 1992-06-10 | Tape cassette |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2590825Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5241802A (en) * | 1975-09-29 | 1977-03-31 | Hitachi Ltd | Convex pole type rotor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686673U (en) * | 1979-12-01 | 1981-07-11 |
-
1992
- 1992-06-10 JP JP1992046133U patent/JP2590825Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH064977U (en) | 1994-01-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19981201 |
|
| LAPS | Cancellation because of no payment of annual fees |