JPS58137173A - Tape cassette case - Google Patents
Tape cassette caseInfo
- Publication number
- JPS58137173A JPS58137173A JP1826082A JP1826082A JPS58137173A JP S58137173 A JPS58137173 A JP S58137173A JP 1826082 A JP1826082 A JP 1826082A JP 1826082 A JP1826082 A JP 1826082A JP S58137173 A JPS58137173 A JP S58137173A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- case
- cassette case
- abs
- composite material
- 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
- 239000000843 powder Substances 0.000 claims abstract description 9
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 4
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 239000012779 reinforcing material Substances 0.000 claims abstract description 4
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 4
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 4
- DHKHKXVYLBGOIT-UHFFFAOYSA-N 1,1-Diethoxyethane Chemical compound CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000004952 Polyamide Substances 0.000 claims abstract description 3
- 239000011354 acetal resin Substances 0.000 claims abstract description 3
- 239000004760 aramid Substances 0.000 claims abstract description 3
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 3
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims abstract description 3
- 239000008116 calcium stearate Substances 0.000 claims abstract description 3
- 235000013539 calcium stearate Nutrition 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims abstract description 3
- 229920006324 polyoxymethylene Polymers 0.000 claims abstract description 3
- 229920006122 polyamide resin Polymers 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 239000000314 lubricant Substances 0.000 abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 2
- 238000013329 compounding Methods 0.000 abstract 1
- 239000012783 reinforcing fiber Substances 0.000 abstract 1
- 229920003002 synthetic resin Polymers 0.000 description 5
- 239000000057 synthetic resin Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
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
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/087—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using two different reels or cores
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、テープカセットのケースに関し、熱変化によ
る安定性を良くして変形を少なくシ、高密度にして成形
時の過充填による残留応力による変形を少なくシ、潤滑
性を改善してテープ走行を円滑にし、導電率を高くして
帯電による悪影響を防止するようにしたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tape cassette case that has improved stability due to thermal changes to reduce deformation, high density to reduce deformation due to residual stress due to overfilling during molding, and lubrication. This improves the properties of the tape to make it run smoothly, and increases the electrical conductivity to prevent the negative effects of charging.
従来、図面に示した如く、内部にテープガイド１ａとガ
イドローラー２を枢支するだめの支軸１ｂとが一体形成
されていて該テープガイド１ａと該ガイドローラー２と
により磁気テープ３を案内するようにしたカセットケー
ス１は、一般にＡＢＳ樹脂等の合成樹脂のみをもって成
形されているのが一般的である。ところが、このような
材料で形成されるケース１は、その構成材料の性質上熱
収縮率が大きく且つ熱膨張に対する復元性が悪いために
、温度変化によってテープガイド１ａ及び支軸１ｂ等の
テープガイド構成部の垂直度が変化し、その結果テープ
２の位置が変化するため温度変化により録音再生特性が
変化するという問題があった。父、ケース１は、その構
成材料の性質上成形後過充填による残留応力により変形
するので、内側に変形することによりケース１内のテー
プ３の走行が妨げられたり、特にテープガイドｌａ及び
支軸１ｂ等のテープガイド構成部においては成形後ヒケ
により垂直度が変化し、その結果テープ３０走行が片寄
るためテープ３の正規の位置での録音が不可能となり、
録音再生特性が著しく劣化するという問題があった。又
、ケース１は、その構成材料の性質上内部をテープ３が
走行することにより摩擦帯電が生じ、その結果テープ３
に埃が付着してドロップアウトの原因となるため、良好
な録音再生が期待出来なかった。Conventionally, as shown in the drawings, a tape guide 1a and a support shaft 1b for pivotally supporting a guide roller 2 are integrally formed inside, and the magnetic tape 3 is guided by the tape guide 1a and the guide roller 2. The cassette case 1 is generally molded only from synthetic resin such as ABS resin. However, the case 1 made of such a material has a high thermal contraction rate due to the nature of its constituent materials and has poor resilience against thermal expansion, so the tape guides such as the tape guide 1a and the support shaft 1b may be damaged due to temperature changes. There is a problem in that the perpendicularity of the components changes, and as a result, the position of the tape 2 changes, resulting in changes in recording and playback characteristics due to temperature changes. Due to the nature of its constituent materials, the case 1 deforms due to residual stress caused by overfilling after molding, so the inward deformation may impede the running of the tape 3 inside the case 1, especially the tape guide la and the support shaft. In the tape guide components such as 1b, the perpendicularity changes due to sink marks after molding, and as a result, the tape 30 runs unevenly, making it impossible to record at the normal position of the tape 3.
There was a problem in that the recording and playback characteristics deteriorated significantly. In addition, due to the nature of the constituent material of the case 1, frictional charging occurs when the tape 3 runs inside, and as a result, the tape 3
Good recording and playback could not be expected because dust would adhere to the disc and cause dropouts.
本発明は、上記問題点に鑑み、熱変化による安定性を良
くして変形を少なくシ、高密度にして成形時の過充填に
よる残留応力による変形を少なくし、潤滑性を改善して
テープ走行を円滑にし、導電率を高くして帯電による悪
影響を防止するようにしたケースを提供せんとするもの
である。即ち、本発明によるケースは、ＡＢＳ樹脂、ポ
リアミド。In view of the above problems, the present invention improves stability due to thermal changes to reduce deformation, increases density to reduce deformation due to residual stress due to overfilling during molding, and improves lubricity to allow tape running. It is an object of the present invention to provide a case that has smooth conductivity and high conductivity to prevent adverse effects caused by charging. That is, the case according to the present invention is made of ABS resin or polyamide.
アセタール系樹脂等の熱可塑性樹脂１００重量部に対し
亜鉛、アルミニウム、鉄等の金属粉或はその酸化物を１
５０〜５００重量部混入し、更に潤滑性を増すための添
加剤として例えばステアリン酸カルシウム１重社部及び
補強材として例えば芳香族ポリアミド繊維１〜５０重置
部を加えた複合材料により形成して成るものである。1 part by weight of metal powder such as zinc, aluminum, iron, or its oxide per 100 parts by weight of thermoplastic resin such as acetal resin.
It is formed from a composite material in which 50 to 500 parts by weight are mixed, and an additive for increasing lubricity, such as one layer of calcium stearate, and a reinforcing material, for example, 1 to 50 parts of aromatic polyamide fiber are added. It is something.
本発明によるケースは上述の如く構成されており、合成
樹脂に混入される亜鉛、アルミニウム。The case according to the present invention is constructed as described above, and contains zinc and aluminum mixed in the synthetic resin.
鉄等の金属粉或はその酸化物は熱収縮率が小さく且つ熱
膨張に対する復元性が良いから、テープガイド構成部の
垂直度が温度変化によって変化することは＃１とんどな
く、録音再生特性が温度変化に対して安定する。父、上
記金属粉或はその酸化物は高密度であって成形時の過充
填による残留応力による変形がないから、本発明による
ケースは成形後内側に変形することがなく、而も潤滑剤
も含んでいることからテープ走行は円滑となる。父、同
じ理由によりテープガイド構成部の垂直度が変化しない
から、テープは常に正規の位置に保持され、その結果良
好な録音再生が可能となる。父、本発明によるケースは
、合成樹脂に金属或は金属酸化物を混入することにより
導電率を高くしているので、テープ走行による摩擦帯電
はなくテープに埃が付着しない。従って、ドロップアウ
トの原因がなくなるので、良好な録音再生が可能となる
。Metal powder such as iron or its oxide has a low thermal contraction rate and good resilience against thermal expansion, so the perpendicularity of the tape guide component rarely changes due to temperature changes, making recording and playback possible. Characteristics are stable against temperature changes. Since the metal powder or its oxide has a high density and is not deformed by residual stress due to overfilling during molding, the case according to the present invention does not deform inward after molding, and also does not require lubricant. Since it contains the tape, the tape runs smoothly. For the same reason, the verticality of the tape guide component does not change, so the tape is always held in the correct position, resulting in good recording and playback. Since the case according to the present invention has high electrical conductivity by mixing metal or metal oxide into the synthetic resin, there is no frictional electrification caused by the running of the tape, and no dust adheres to the tape. Therefore, since the cause of dropout is eliminated, good recording and playback is possible.
尚、合成樹脂に金属粉等を多量に混入すると強度が低下
するが、本発明によるケースの場合は補強材として炭素
繊維等を加えることによシ解決している。父、合成樹脂
に金属粉等を多量に混入すると潤滑性も低下するが、本
発明によるケースの場合は、ステアリン酸等の添加剤を
加えることにより潤滑性を増している。以上の二点の改
良によシ、本発明によるケースは、金属粉混入前の樹脂
の特性を維持している。Incidentally, if a large amount of metal powder or the like is mixed into the synthetic resin, the strength will decrease, but this problem is solved in the case of the present invention by adding carbon fiber or the like as a reinforcing material. However, if a large amount of metal powder or the like is mixed into a synthetic resin, the lubricity will be reduced, but in the case of the present invention, the lubricity is increased by adding an additive such as stearic acid. In addition to the above two improvements, the case according to the present invention maintains the characteristics of the resin before mixing the metal powder.
上述の如く、本発明によるテープカセットのケースによ
れば、録音再生特性が温度変化に対して安定し、テープ
走行が円滑となり、テープが常に正規の位置に保持され
、テープ走行による摩擦帯電がなくなるので、良好な録
音再生が可能になるという実際上重要な利点を有してい
る。As described above, according to the tape cassette case of the present invention, the recording and playback characteristics are stable against temperature changes, the tape runs smoothly, the tape is always held in the correct position, and frictional charging due to tape running is eliminated. Therefore, it has an important practical advantage of being able to perform good recording and playback.
図面はテープカセットのケース及びその内部構造を示す
斜視図である。
１・・・・カセットケース、１ａ・・・・テープガイド
、１ｂ・・・・支軸、２・・・・ガイドローラー、３・
・・・磁気テープ。
しThe drawing is a perspective view showing the case of the tape cassette and its internal structure. 1...Cassette case, 1a...Tape guide, 1b...Spindle, 2...Guide roller, 3...
···Magnetic tape. death
Claims (1)
性樹脂１００重量部に対し亜鉛、アルミニウム、鉄等の
金属粉或はその酸化物を１５０〜５００重量部混入し、
更に潤滑性を増すための添加剤として例えばステアリン
酸カルシウム１重量部及び補強材として例えば芳香族ポ
リアミド繊維１〜５０重量部を加えた複合材料により形
成して成るテープカセットのケース。150 to 500 parts by weight of metal powder such as zinc, aluminum, iron, or its oxide is mixed into 100 parts by weight of a thermoplastic resin such as ABS resin, polyamide, or acetal resin,
A tape cassette case made of a composite material to which additives for increasing lubricity, such as 1 part by weight of calcium stearate, and reinforcing materials, such as 1 to 50 parts by weight of aromatic polyamide fibers, are added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1826082A JPS58137173A (en) | 1982-02-09 | 1982-02-09 | Tape cassette case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1826082A JPS58137173A (en) | 1982-02-09 | 1982-02-09 | Tape cassette case |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58137173A true JPS58137173A (en) | 1983-08-15 |
Family
ID=11966702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1826082A Pending JPS58137173A (en) | 1982-02-09 | 1982-02-09 | Tape cassette case |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58137173A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2538938A1 (en) * | 1982-12-29 | 1984-07-06 | Sony Corp | MAGNETIC STRIP CASSETTE IN WHICH THE ELEMENTS CONTAIN CERAMIC OR SYNTHETIC MATERIALS OR A MIXTURE OF BOTH |
| JPS60124077A (en) * | 1983-12-08 | 1985-07-02 | Yoshiro Nakamatsu | Package for recording and reproducing medium |
| JPS6187286A (en) * | 1984-10-05 | 1986-05-02 | Sony Corp | Tape cassette and cassette mechanism parts |
| EP0223538A2 (en) * | 1985-11-13 | 1987-05-27 | Minnesota Mining And Manufacturing Company | Plastic supply tape guide for videocassette |
| EP0528300A2 (en) * | 1991-08-16 | 1993-02-24 | BASF Magnetics GmbH | Cassette with record carrier, particularly magnetic tape cassette |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133539U (en) * | 1974-09-03 | 1976-03-12 | ||
| JPS56127984A (en) * | 1980-03-10 | 1981-10-07 | Sony Corp | Hub piece of tape cassette |
-
1982
- 1982-02-09 JP JP1826082A patent/JPS58137173A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5133539U (en) * | 1974-09-03 | 1976-03-12 | ||
| JPS56127984A (en) * | 1980-03-10 | 1981-10-07 | Sony Corp | Hub piece of tape cassette |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2538938A1 (en) * | 1982-12-29 | 1984-07-06 | Sony Corp | MAGNETIC STRIP CASSETTE IN WHICH THE ELEMENTS CONTAIN CERAMIC OR SYNTHETIC MATERIALS OR A MIXTURE OF BOTH |
| JPS60124077A (en) * | 1983-12-08 | 1985-07-02 | Yoshiro Nakamatsu | Package for recording and reproducing medium |
| JPS6187286A (en) * | 1984-10-05 | 1986-05-02 | Sony Corp | Tape cassette and cassette mechanism parts |
| EP0223538A2 (en) * | 1985-11-13 | 1987-05-27 | Minnesota Mining And Manufacturing Company | Plastic supply tape guide for videocassette |
| EP0528300A2 (en) * | 1991-08-16 | 1993-02-24 | BASF Magnetics GmbH | Cassette with record carrier, particularly magnetic tape cassette |
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