JPH0280321U - - Google Patents
Info
- Publication number
- JPH0280321U JPH0280321U JP1988157558U JP15755888U JPH0280321U JP H0280321 U JPH0280321 U JP H0280321U JP 1988157558 U JP1988157558 U JP 1988157558U JP 15755888 U JP15755888 U JP 15755888U JP H0280321 U JPH0280321 U JP H0280321U
- Authority
- JP
- Japan
- Prior art keywords
- hole
- information recording
- center member
- sleeve
- sectional shape
- 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
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Optical Record Carriers And Manufacture Thereof (AREA)
Description
第１図は本考案の一実施例の光デイスクを示す
平面図、第２図は上記実施例の情報記録デイスク
の貫通孔を示す平面図、第３図は上記実施例のセ
ンタ部材を示す斜視図、第４図及び第５図は本考
案の変形例を示す断面図、第６図は貫通孔の別の
例を示す図、第７図ないし第９図はマグネツト固
定方式の従来の光デイスクの構成例を示す図であ
る。
１…情報記録デイスク、２…貫通孔、２′…内
接円、２″…外接円、３…センタ部材、４…スピ
ンドル挿入用孔、５…円筒部、６，６′…袖部。
FIG. 1 is a plan view showing an optical disk according to an embodiment of the present invention, FIG. 2 is a plan view showing a through hole of the information recording disk according to the above embodiment, and FIG. 3 is a perspective view showing the center member of the above embodiment. 4 and 5 are cross-sectional views showing a modification of the present invention, FIG. 6 is a view showing another example of a through hole, and FIGS. 7 to 9 are conventional optical disks using a magnetic fixing method. It is a figure showing an example of composition. DESCRIPTION OF SYMBOLS 1... Information recording disk, 2... Through hole, 2'... Inscribed circle, 2''... Circumscribed circle, 3... Center member, 4... Spindle insertion hole, 5... Cylindrical part, 6, 6'... Sleeve part.
Claims (1)
部と同心的に形成された２つの袖部よりなり、前
記貫通孔に装着されるセンタ部材とから構成され
る情報記録媒体において、 前記貫通孔は、同心で径の異なる内接円及び外
接円を持つ横断面形状を有し、 前記センタ部材は、少なくとも一方の袖部が前
記貫通孔と同じ断面形状であり、かつ円筒部の外
径が前記貫通孔の内接円の径と等しく構成され、 前記センタ部材の両袖部と前記情報記録デイス
クの各面との間の係合により、前記センタ部材が
固定されていることを特徴とする情報記録媒体。[Claims for Utility Model Registration] Consisting of an information recording disk having a through hole in the center, a cylindrical part having a spindle insertion hole, and two sleeve parts formed concentrically with the cylindrical part, which are attached to the through hole. In the information recording medium, the through hole has a cross-sectional shape having an inscribed circle and a circumscribed circle that are concentric and have different diameters, and the center member has at least one sleeve portion. The cylindrical portion has the same cross-sectional shape as the through hole, and the outer diameter of the cylindrical portion is equal to the diameter of the inscribed circle of the through hole, and the distance between both sleeve portions of the center member and each surface of the information recording disk is An information recording medium characterized in that the center member is fixed by engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157558U JPH0280321U (en) | 1988-12-02 | 1988-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988157558U JPH0280321U (en) | 1988-12-02 | 1988-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0280321U true JPH0280321U (en) | 1990-06-20 |
Family
ID=31437104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988157558U Pending JPH0280321U (en) | 1988-12-02 | 1988-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280321U (en) |
-
1988
- 1988-12-02 JP JP1988157558U patent/JPH0280321U/ja active Pending