JPS636508U - - Google Patents
Info
- Publication number
- JPS636508U JPS636508U JP9957886U JP9957886U JPS636508U JP S636508 U JPS636508 U JP S636508U JP 9957886 U JP9957886 U JP 9957886U JP 9957886 U JP9957886 U JP 9957886U JP S636508 U JPS636508 U JP S636508U
- Authority
- JP
- Japan
- Prior art keywords
- drum
- hole
- circumferential groove
- center
- wall
- 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
Description
第１図は本考案の一実施例を示す縦断面図、第
２図は第１図に示した回転トランスの要部を示す
ものであり、同図ａは平面図、同図ｂは同図ａの
Ａ―Ａ線矢視断面図、第３図は従来の回転磁気ヘ
ツドドラム装置を示す縦断面図である。
１は回転軸、８はデイスク、８ａは突出形成部
、９は上ドラム、９ａは貫通穴、９ｂは第２円周
溝、９ｃは第１円周溝、９ｄは切欠き、９ｅは内
周壁部である。
Fig. 1 is a longitudinal sectional view showing an embodiment of the present invention, Fig. 2 shows the main parts of the rotary transformer shown in Fig. 1, Fig. 1a is a plan view, and Fig. 2b is a plan view. FIG. 3 is a longitudinal sectional view showing a conventional rotating magnetic head drum device. 1 is a rotating shaft, 8 is a disk, 8a is a protrusion forming part, 9 is an upper drum, 9a is a through hole, 9b is a second circumferential groove, 9c is a first circumferential groove, 9d is a notch, 9e is an inner circumferential wall Department.
Claims (1)
成部を有するデイスクが嵌着され、上記突出形成
部に、上ドラムの上壁中央部に形成された貫通穴
が嵌装された回転磁気ヘツドドラム装置において
、上ドラムにおける貫通穴近傍の上壁上面に、上
ドラムと同心状の第１円周溝を形成すると共に、
この第１円周溝と上記貫通穴との間に形成される
内周壁部に、第１円周溝と貫通孔とを連通する切
欠きを形成し、さらに、上記第１円周溝より外周
側の前記上ドラムにおける上壁下面に、前記上ド
ラムと同心状の第２円周溝を形成したことを特徴
とする回転磁気ヘツドドラム装置。 A rotating magnetic disc having a cylindrical protrusion formed in the center of the upper surface is fitted onto the upper part of the rotating shaft, and a through hole formed in the center of the upper wall of the upper drum is fitted into the protrusion. In the head drum device, a first circumferential groove concentric with the upper drum is formed on the upper surface of the upper wall near the through hole of the upper drum, and
A notch that communicates the first circumferential groove and the through hole is formed in an inner circumferential wall portion formed between the first circumferential groove and the through hole; A rotating magnetic head drum device characterized in that a second circumferential groove concentric with the upper drum is formed on the lower surface of the upper wall of the upper drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957886U JPS636508U (en) | 1986-06-27 | 1986-06-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9957886U JPS636508U (en) | 1986-06-27 | 1986-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS636508U true JPS636508U (en) | 1988-01-16 |
Family
ID=30968584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9957886U Pending JPS636508U (en) | 1986-06-27 | 1986-06-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS636508U (en) |
-
1986
- 1986-06-27 JP JP9957886U patent/JPS636508U/ja active Pending