JPS61158671U - - Google Patents
Info
- Publication number
- JPS61158671U JPS61158671U JP4140985U JP4140985U JPS61158671U JP S61158671 U JPS61158671 U JP S61158671U JP 4140985 U JP4140985 U JP 4140985U JP 4140985 U JP4140985 U JP 4140985U JP S61158671 U JPS61158671 U JP S61158671U
- Authority
- JP
- Japan
- Prior art keywords
- center core
- disk
- core portion
- attachment surface
- notch portion
- 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
- 239000007769 metal material Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 1
Description
第１図は本考案による磁気デイスクカートリツ
ジのセンターコア部を示す概略図、第２図は本考
案による磁気デイスクカートリツジの概要を示す
分解斜視図、第３図は第２図に示す磁気デイスク
カートリツジの組立状態を示す断面図である。
１０……上ハーフ、１１……下ハーフ、１２…
…ケース、１３……センターコア、１３ａ……セ
ンターコア底面、１３ｂ……金属板、１３ｃ……
環状部材、１３ｄ……環状突部、１３ｅ……デイ
スク貼着面、１３ｆ……センターホール、１３ｇ
……切欠部、１３ｉ……駆動ホール、１３ｊ……
バランス用切欠部。
FIG. 1 is a schematic diagram showing the center core portion of the magnetic disk cartridge according to the present invention, FIG. 2 is an exploded perspective view showing an overview of the magnetic disk cartridge according to the present invention, and FIG. 3 is a diagram showing the magnetic disk shown in FIG. 2. FIG. 3 is a sectional view showing the assembled state of the cartridge. 10...upper half, 11...lower half, 12...
...Case, 13...Center core, 13a...Bottom surface of center core, 13b...Metal plate, 13c...
Annular member, 13d...Annular protrusion, 13e...Disc adhesion surface, 13f...Center hole, 13g
...Notch, 13i... Drive hole, 13j...
Balance notch.
Claims (1)
に保持されたフレキシブルな円盤状の磁気記録媒
体をケース内に回転可能に収納してなる磁気デイ
スクカートリツジにおいて、 前記センターコアが、前記デイスク貼着面を上
面に備えてなる非金属材料よりなる円環状の第１
センターコア部と、 この第１センターコア部下面に固着されるとと
もに、前記デイスク貼着面の外径以上の大きさで
大略円板状に形成され、中心に回転モータ軸が挿
入される中心孔と外周部に駆動ピンが挿入される
駆動孔とを穿設された磁性金属材料よりなる第２
センターコア部とを備え、 前記第１センターコア部が、前記第２センター
コア部の駆動孔と対向する位置に切欠部を備える
とともに、該切欠部との成型熱収縮バランスをと
るバランス用切欠部を備えてなることを特徴とす
る磁気デイスクカートリツジ。[Scope of Claim for Utility Model Registration] A magnetic disk cartridge comprising a flexible disk-shaped magnetic recording medium held on the disk attachment surface of a tracking center core and rotatably housed in a case, wherein the center core comprises: , a first circular ring made of a non-metallic material and having the disk attachment surface on its upper surface;
a center core portion, which is fixed to the lower surface of the first center core and is formed into a generally disk shape with a size larger than the outer diameter of the disk attachment surface, and into which a rotating motor shaft is inserted; and a drive hole into which a drive pin is inserted in the outer periphery.
a center core portion, wherein the first center core portion includes a notch portion at a position facing the drive hole of the second center core portion, and a balance notch portion that balances molding heat shrinkage with the notch portion. A magnetic disk cartridge characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4140985U JPS61158671U (en) | 1985-03-22 | 1985-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4140985U JPS61158671U (en) | 1985-03-22 | 1985-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61158671U true JPS61158671U (en) | 1986-10-01 |
Family
ID=30551206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4140985U Pending JPS61158671U (en) | 1985-03-22 | 1985-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61158671U (en) |
-
1985
- 1985-03-22 JP JP4140985U patent/JPS61158671U/ja active Pending